The perfect first bike for your toddler- the Tadpole balance bike best suits 2 and 3 year olds with a minimum inside leg of 31cm.

Wheel Size: 12" inch

Why buy a Tadpole? - Lightweight but sturdy Frame
- Tektro rear brake with small easy to reach brake lever
- Safety steering lock
- Top mounted brake arms avoids feet catching
- Quick release seat post for easy height adjustment
- Free 5 year warranty on frame and forks
- Reflectors and bell included
 
Detailed spec
Approx Age 2-3 Wheel Size 12" Colours Red, Pink, Green, Spotty, Orange, Team Sky White, Union Jack Weight 4.17 kg Frame Aluminium 10cm / 4" Tadpole Frame Fork Aluminium Fork Front Hub Quando, aluminium, 16 hole, sealed hub with 5mm allen bolt internal fixing Rear Hub Quando, aluminium, 16 hole, sealed hub with 5mm allen bolt internal fixing Rim Aluminium, 12"x1.5", Single wall? Seat Post Aluminium, micro adjust, 27.2mm Seat clamp Aluminium, QR Head Set Locking headset, 27mm Handlebar Frog Bikes Aluminium Little Handlebars Width 420mm Stem Aluminium, 1"1/8, 38mm, 4 bolt clamp Brakes (Rear only) Tektro Aluminium J310 Black. Mounted above the stay Grips Frog Bikes specific, lock on, slim grips Brake Levers Tektro JL352-RS, aluminium, easy reach brake lever Brake Calliper Tektro J310, aluminium, mini v-brake Saddle Frog Bikes, child specific saddle (small) Tyres Primary Kenda K909A, 12.5"x1.75", Hybrid, (ETRTO/ISO 47-203) Accessories box Bell, bike reflectors white/red, wheel reflectors orange/white, paint plasters (excl. Union Jack- touch up paint supplied), frame protector patches, right brake lever (Tektro JL352-RS) A Wheelbase (mm) 664 B Seat tube angle (degrees) 75 C Head tube angle (degrees) 71 D Effective top tube (mm) 340 E Head tube length (mm) 75 F Chain stay length (mm) 276 G Seat tube length (mm) 170 H BB to Floor (mm) 165

The perfect first bike for your toddler- the Tadpole balance bike best suits 2 and 3 year olds with a minimum inside leg of 31cm.

Wheel Size: 12" inch

Why buy a Tadpole? - Lightweight but sturdy Frame
- Tektro rear brake with small easy to reach brake lever
- Safety steering lock
- Top mounted brake arms avoids feet catching
- Quick release seat post for easy height adjustment
- Free 5 year warranty on frame and forks
- Reflectors and bell included
 
Detailed spec
Approx Age 2-3 Wheel Size 12" Colours Red, Pink, Green, Spotty, Orange, Team Sky White, Union Jack Weight 4.17 kg Frame Aluminium 10cm / 4" Tadpole Frame Fork Aluminium Fork Front Hub Quando, aluminium, 16 hole, sealed hub with 5mm allen bolt internal fixing Rear Hub Quando, aluminium, 16 hole, sealed hub with 5mm allen bolt internal fixing Rim Aluminium, 12"x1.5", Single wall? Seat Post Aluminium, micro adjust, 27.2mm Seat clamp Aluminium, QR Head Set Locking headset, 27mm Handlebar Frog Bikes Aluminium Little Handlebars Width 420mm Stem Aluminium, 1"1/8, 38mm, 4 bolt clamp Brakes (Rear only) Tektro Aluminium J310 Black. Mounted above the stay Grips Frog Bikes specific, lock on, slim grips Brake Levers Tektro JL352-RS, aluminium, easy reach brake lever Brake Calliper Tektro J310, aluminium, mini v-brake Saddle Frog Bikes, child specific saddle (small) Tyres Primary Kenda K909A, 12.5"x1.75", Hybrid, (ETRTO/ISO 47-203) Accessories box Bell, bike reflectors white/red, wheel reflectors orange/white, paint plasters (excl. Union Jack- touch up paint supplied), frame protector patches, right brake lever (Tektro JL352-RS) A Wheelbase (mm) 664 B Seat tube angle (degrees) 75 C Head tube angle (degrees) 71 D Effective top tube (mm) 340 E Head tube length (mm) 75 F Chain stay length (mm) 276 G Seat tube length (mm) 170 H BB to Floor (mm) 165

The perfect first bike for your toddler- the Tadpole balance bike best suits 2 and 3 year olds with a minimum inside leg of 31cm.

Wheel Size: 12" inch

Why buy a Tadpole? - Lightweight but sturdy Frame
- Tektro rear brake with small easy to reach brake lever
- Safety steering lock
- Top mounted brake arms avoids feet catching
- Quick release seat post for easy height adjustment
- Free 5 year warranty on frame and forks
- Reflectors and bell included
 
Detailed spec
Approx Age 2-3 Wheel Size 12" Colours Red, Pink, Green, Spotty, Orange, Team Sky White, Union Jack Weight 4.17 kg Frame Aluminium 10cm / 4" Tadpole Frame Fork Aluminium Fork Front Hub Quando, aluminium, 16 hole, sealed hub with 5mm allen bolt internal fixing Rear Hub Quando, aluminium, 16 hole, sealed hub with 5mm allen bolt internal fixing Rim Aluminium, 12"x1.5", Single wall? Seat Post Aluminium, micro adjust, 27.2mm Seat clamp Aluminium, QR Head Set Locking headset, 27mm Handlebar Frog Bikes Aluminium Little Handlebars Width 420mm Stem Aluminium, 1"1/8, 38mm, 4 bolt clamp Brakes (Rear only) Tektro Aluminium J310 Black. Mounted above the stay Grips Frog Bikes specific, lock on, slim grips Brake Levers Tektro JL352-RS, aluminium, easy reach brake lever Brake Calliper Tektro J310, aluminium, mini v-brake Saddle Frog Bikes, child specific saddle (small) Tyres Primary Kenda K909A, 12.5"x1.75", Hybrid, (ETRTO/ISO 47-203) Accessories box Bell, bike reflectors white/red, wheel reflectors orange/white, paint plasters (excl. Union Jack- touch up paint supplied), frame protector patches, right brake lever (Tektro JL352-RS) A Wheelbase (mm) 664 B Seat tube angle (degrees) 75 C Head tube angle (degrees) 71 D Effective top tube (mm) 340 E Head tube length (mm) 75 F Chain stay length (mm) 276 G Seat tube length (mm) 170 H BB to Floor (mm) 165

The perfect first bike for your toddler- the Tadpole balance bike best suits 2 and 3 year olds with a minimum inside leg of 31cm.

Wheel Size: 12" inch

Why buy a Tadpole? - Lightweight but sturdy Frame
- Tektro rear brake with small easy to reach brake lever
- Safety steering lock
- Top mounted brake arms avoids feet catching
- Quick release seat post for easy height adjustment
- Free 5 year warranty on frame and forks
- Reflectors and bell included
 
Detailed spec
Approx Age 2-3 Wheel Size 12" Colours Red, Pink, Green, Spotty, Orange, Team Sky White, Union Jack Weight 4.17 kg Frame Aluminium 10cm / 4" Tadpole Frame Fork Aluminium Fork Front Hub Quando, aluminium, 16 hole, sealed hub with 5mm allen bolt internal fixing Rear Hub Quando, aluminium, 16 hole, sealed hub with 5mm allen bolt internal fixing Rim Aluminium, 12"x1.5", Single wall? Seat Post Aluminium, micro adjust, 27.2mm Seat clamp Aluminium, QR Head Set Locking headset, 27mm Handlebar Frog Bikes Aluminium Little Handlebars Width 420mm Stem Aluminium, 1"1/8, 38mm, 4 bolt clamp Brakes (Rear only) Tektro Aluminium J310 Black. Mounted above the stay Grips Frog Bikes specific, lock on, slim grips Brake Levers Tektro JL352-RS, aluminium, easy reach brake lever Brake Calliper Tektro J310, aluminium, mini v-brake Saddle Frog Bikes, child specific saddle (small) Tyres Primary Kenda K909A, 12.5"x1.75", Hybrid, (ETRTO/ISO 47-203) Accessories box Bell, bike reflectors white/red, wheel reflectors orange/white, paint plasters (excl. Union Jack- touch up paint supplied), frame protector patches, right brake lever (Tektro JL352-RS) A Wheelbase (mm) 664 B Seat tube angle (degrees) 75 C Head tube angle (degrees) 71 D Effective top tube (mm) 340 E Head tube length (mm) 75 F Chain stay length (mm) 276 G Seat tube length (mm) 170 H BB to Floor (mm) 165

The perfect first bike for your toddler- the Tadpole balance bike best suits 2 and 3 year olds with a minimum inside leg of 31cm.

Wheel Size: 12" inch

Why buy a Tadpole? - Lightweight but sturdy Frame
- Tektro rear brake with small easy to reach brake lever
- Safety steering lock
- Top mounted brake arms avoids feet catching
- Quick release seat post for easy height adjustment
- Free 5 year warranty on frame and forks
- Reflectors and bell included
 
Detailed spec
Approx Age 2-3 Wheel Size 12" Colours Red, Pink, Green, Spotty, Orange, Team Sky White, Union Jack Weight 4.17 kg Frame Aluminium 10cm / 4" Tadpole Frame Fork Aluminium Fork Front Hub Quando, aluminium, 16 hole, sealed hub with 5mm allen bolt internal fixing Rear Hub Quando, aluminium, 16 hole, sealed hub with 5mm allen bolt internal fixing Rim Aluminium, 12"x1.5", Single wall? Seat Post Aluminium, micro adjust, 27.2mm Seat clamp Aluminium, QR Head Set Locking headset, 27mm Handlebar Frog Bikes Aluminium Little Handlebars Width 420mm Stem Aluminium, 1"1/8, 38mm, 4 bolt clamp Brakes (Rear only) Tektro Aluminium J310 Black. Mounted above the stay Grips Frog Bikes specific, lock on, slim grips Brake Levers Tektro JL352-RS, aluminium, easy reach brake lever Brake Calliper Tektro J310, aluminium, mini v-brake Saddle Frog Bikes, child specific saddle (small) Tyres Primary Kenda K909A, 12.5"x1.75", Hybrid, (ETRTO/ISO 47-203) Accessories box Bell, bike reflectors white/red, wheel reflectors orange/white, paint plasters (excl. Union Jack- touch up paint supplied), frame protector patches, right brake lever (Tektro JL352-RS) A Wheelbase (mm) 664 B Seat tube angle (degrees) 75 C Head tube angle (degrees) 71 D Effective top tube (mm) 340 E Head tube length (mm) 75 F Chain stay length (mm) 276 G Seat tube length (mm) 170 H BB to Floor (mm) 165

The perfect first bike for your toddler- the Tadpole balance bike best suits 2 and 3 year olds with a minimum inside leg of 31cm.

Wheel Size: 12" inch

Why buy a Tadpole? - Lightweight but sturdy Frame
- Tektro rear brake with small easy to reach brake lever
- Safety steering lock
- Top mounted brake arms avoids feet catching
- Quick release seat post for easy height adjustment
- Free 5 year warranty on frame and forks
- Reflectors and bell included
 
Detailed spec
Approx Age 2-3 Wheel Size 12" Colours Red, Pink, Green, Spotty, Orange, Team Sky White, Union Jack Weight 4.17 kg Frame Aluminium 10cm / 4" Tadpole Frame Fork Aluminium Fork Front Hub Quando, aluminium, 16 hole, sealed hub with 5mm allen bolt internal fixing Rear Hub Quando, aluminium, 16 hole, sealed hub with 5mm allen bolt internal fixing Rim Aluminium, 12"x1.5", Single wall? Seat Post Aluminium, micro adjust, 27.2mm Seat clamp Aluminium, QR Head Set Locking headset, 27mm Handlebar Frog Bikes Aluminium Little Handlebars Width 420mm Stem Aluminium, 1"1/8, 38mm, 4 bolt clamp Brakes (Rear only) Tektro Aluminium J310 Black. Mounted above the stay Grips Frog Bikes specific, lock on, slim grips Brake Levers Tektro JL352-RS, aluminium, easy reach brake lever Brake Calliper Tektro J310, aluminium, mini v-brake Saddle Frog Bikes, child specific saddle (small) Tyres Primary Kenda K909A, 12.5"x1.75", Hybrid, (ETRTO/ISO 47-203) Accessories box Bell, bike reflectors white/red, wheel reflectors orange/white, paint plasters (excl. Union Jack- touch up paint supplied), frame protector patches, right brake lever (Tektro JL352-RS) A Wheelbase (mm) 664 B Seat tube angle (degrees) 75 C Head tube angle (degrees) 71 D Effective top tube (mm) 340 E Head tube length (mm) 75 F Chain stay length (mm) 276 G Seat tube length (mm) 170 H BB to Floor (mm) 165

This 26 inch kids' road bike, with 18 speed gears, is ideal for kids aged between 11 and 14 years old with a minimum inside leg of 70cm

Wheel Size: 26" inch

Why buy a Frog Road 70? - Narrow and short-drop child-specific handlebars
- 18-speed gears with Microshift short-reach brake levers
- Auxillary brake levers for added confidence
- Lightweight but sturdy frame
- Tektro Oryx cantilever brakes
- Patented short Frog cranks for easier pedalling (140mm)
- Quick release seat post for easy height adjustment
- Free 5 year warranty on frame and forks
  Approx Age 11-14 Wheel size 26" (ETRTO/ISO 559) Colours Red, White, Black, Team Sky Black Weight 9.3 kg Frame 6061 T6 heat treated Aliminium alloy Fork 26" Aluminium Alloy 6061 Frog Fork Chain Wheel 34/42T. 140 mm Aluminium Alloy Crank with chain guard Brakes Tektro Oryx (992AG) Aluminium Alloy Cantilever, black Stem 60mm Handlebar Frog Bikes L:360mm Aluminium Alloy Drop bar, black Grip/tape Racing tape with caps (supplied in box) Saddle Frog Bikes racing saddle Seat Post Aluminium 350mm, black Pedal Wellgo R090 Medium Front wheel DA-30, Aluminium Alloy double wall brushed silver, CNC, 26*1.5, 14G, 24H, H:30, F/V ETRTO:559MM Rear wheel DA-30, Aluminium Alloy double wall brushed silver, CNC, 26*1.5, 14G, 24H, H:30, F/V ETRTO:559MM Hubs Quando Aluminium Alloy, black Road tyres Kenda K196 25*1 Black ETRTO: 559mm Cyclocross tyres Kenda K803A 26" x 1.38 Auxillary brake lever Tektro RL570 Left shifter Microshift SBR492S 2 speed Jnr Rapidfire Plus, Alloy for canti/roller-brake, black Right shifter Microshift SBR492S 9 speed Jnr Rapidfire Plus, Alloy for canti/roller-brake, black Front derailleur Microshift 2 speed FD-R32S Rear derailleur Microshift short cage RD-R42s, black Casette Shimano 9 speed, 12-27T Reflectors Wheels (yellow and white both supplied), front, rear Bell L/R handed Accessories box Bell, bike reflectors white/red, wheel reflectors orange/white, paint plasters, frame protector patches


In contrast to many kids' bikes, Frog bikes are sized by the leg length rather than age, as this is the most reliable way of getting the right size of bike for each child. Age alone isn’t a reliable measure as there is a large spread of “normal” leg lengths & heights for each age. Please take the time to measure the rider’s inside leg.
It’s easy to measure: Stand the child in socks against a wall Place a small book between their legs, as high as is comfortable Ask the child to move away and measure from the top of the book to the floor. Once you have measured the inside leg, use this table to find the right size of bike for your child. Note we give the MINIMUM inside leg length for each bike, with the saddle at its lowest setting. At this height, the child will safely and comfortably be able to get their feet on the ground. Don’t worry - Frog Bikes have long seat posts, so the saddle can be raised a long way as the rider grows.
We recommend that you go to a local store who will have many of our bikes available so the rider can sit on a bike.You will get help and advice on sizing, and get on-going service, as well assupport.
PLEASE NOTE we always recommend that you buy your Frog bike from your local Frog store, who will build it for you and ensure the fit is right for your child. Our bikes should always be built and checked by a qualified mechanic.
  Minimum inside leg in cm (in) Approx age Wheel Size Frame Size Tadpole Mini 24cm 1-2 10" Tadpole 31cm (12") 2-3 12" Tadpole Plus 38cm(15") 3-4 14" Frog 43 43cm(17") 3-4 14" 9" Frog 48 48cm(19") 4-5 16" 9.5" Frog 52s 52cm 5-6 20" 10" Frog 52 52cm(20") 5-6 20" 10" Frog 55 55cm(22") 6-7 20" 11" Frog 62 62cm(24") 8-10 24" 12" Frog 69 69cm(27") 10-12 26" 14" Frog 73 73cm(29") 12-14 26" 16" Frog 78 78cm (31") 13+ 26" 18" Frog Road/Track 58 58cm(23") 6-7 20" 11" Frog Road/Track 67 67cm(26") 8-12 24" 14" Frog Road/Track 70 70cm(27") 11-14 26" 17" Frog MTB 62 62cm (24") 8-10 24" 12.5" Frog MTB 69 69cm (27") 10-12 26" 15" Frog MTB 72 72cm (28") 13+ 26" 16"

This 24 inch kids' road bike is best suited for kids aged between 8 and 12 years old with a minimum inside leg of 67cm

Wheel Size: 24" inch

Why buy a Frog Road 67? - Narrow and short-drop child-specific handlebars
- 9-speed gears with Microshift short-reach brake levers
- Auxillary brake levers for added confidence
- Lightweight but sturdy frame
- Tektro Oryx cantilever brakes
- Patented short Frog cranks for easier pedalling (127mm)
- Quick release seat post for easy height adjustment
- Free 5 year warranty on frame and forks Approx Age 8-12 Wheel size 24" (ETRTO/ISO 540) Available colours Red, White, Black, Team Sky Black Weight 8.8 kg Frame 6061 T6 heat treated Aliminium alloy, seat tube 37cm (14.5") Fork 6061 T6 heat treated Aliminium alloy Crank set Frog Bikes Patented, 127mm, Aliminium straight arm cranks, 32T chainring, black Bottom Bracket Neco, square taper, 68/107.5, cartridge bearings Pedals Wellgo R090, resin platform, single sided, toe clips (medium), reflectors, 9/16" Front Hub Quando, Aliminium, sealed hub, QR, 24 hole Rear Hub Quando, Aliminium, sealed hub, QR, 28 hole, Shimano type free hub body, 9-speed Cassette Shimano Acera, HG-31, 9-speed, 12-27T (Team Sky models 11-32t) Rear derailleur Microshift RD-42s (Team Sky Shimano Sora), 9-speed Front derailleur n/a Chain KMC, 9-speed Rim Aliminium double wall, deep section, machined braking surface Seat Post Aliminium, micro adjust, 27.2mm Seat clamp Aliminium, QR Headset Neco, 1"1/8 semi-integrated threadless, front brake hanger, Frog Bikes top cap Handlebar 6061 Aliminium, custom drop bar, 340mm Stem Aliminium, 1"1/8, 38mm, 4 bolt clamp Bar Tape Black bar tape Gear Shifter Microshift SBR492S, 9-speed, Jnr rapidfire plus, Aliminium canti/roller-brake Brake levers Integrated to gear shifters & Tektro RL570 auxillary levers Brakes (F&R) Tektro Oryx, 992AG, alloy cantilever Saddle Frog Bikes, child specific slimline saddle (small), steel rails Tyres Primary Kenda K-191, 24"x1", Road, (ETRTO/ISO 23-540) Tyres Secondary Kenda, K1153 24"x1”3/8 Cyclo-Cross, (ETRTO/ISO 37-540) Accessories box Bell, bike reflectors white/red, wheel reflectors orange/white, paint plasters, frame protector patches


In contrast to many kids' bikes, Frog bikes are sized by the leg length rather than age, as this is the most reliable way of getting the right size of bike for each child. Age alone isn’t a reliable measure as there is a large spread of “normal” leg lengths & heights for each age. Please take the time to measure the rider’s inside leg.
It’s easy to measure: Stand the child in socks against a wall Place a small book between their legs, as high as is comfortable Ask the child to move away and measure from the top of the book to the floor. Once you have measured the inside leg, use this table to find the right size of bike for your child. Note we give the MINIMUM inside leg length for each bike, with the saddle at its lowest setting. At this height, the child will safely and comfortably be able to get their feet on the ground. Don’t worry - Frog Bikes have long seat posts, so the saddle can be raised a long way as the rider grows.
We recommend that you go to a local store who will have many of our bikes available so the rider can sit on a bike.You will get help and advice on sizing, and get on-going service, as well assupport.
PLEASE NOTE we always recommend that you buy your Frog bike from your local Frog store, who will build it for you and ensure the fit is right for your child. Our bikes should always be built and checked by a qualified mechanic.
  Minimum inside leg in cm (in) Approx age Wheel Size Frame Size Tadpole Mini 24cm 1-2 10" Tadpole 31cm (12") 2-3 12" Tadpole Plus 38cm(15") 3-4 14" Frog 43 43cm(17") 3-4 14" 9" Frog 48 48cm(19") 4-5 16" 9.5" Frog 52s 52cm 5-6 20" 10" Frog 52 52cm(20") 5-6 20" 10" Frog 55 55cm(22") 6-7 20" 11" Frog 62 62cm(24") 8-10 24" 12" Frog 69 69cm(27") 10-12 26" 14" Frog 73 73cm(29") 12-14 26" 16" Frog 78 78cm (31") 13+ 26" 18" Frog Road/Track 58 58cm(23") 6-7 20" 11" Frog Road/Track 67 67cm(26") 8-12 24" 14" Frog Road/Track 70 70cm(27") 11-14 26" 17" Frog MTB 62 62cm (24") 8-10 24" 12.5" Frog MTB 69 69cm (27") 10-12 26" 15" Frog MTB 72 72cm (28") 13+ 26" 16"

This 20 inch kids' road bike is best suited for kids aged between 6 and 7 years old with a minimum inside leg of 58cm

Wheel Size: 20" inch

Why buy a Frog Road 58? - Narrow and short-drop child-specific handlebars
- 9-speed gears with Microshift short-reach brake levers
- Auxillary brake levers for added confidence
- Lightweight but sturdy frame
- Tektro Oryx cantilever brakes
- Patented short Frog cranks for easier pedalling (114mm)
- Quick release seat post for easy height adjustment
- Free 5 year warranty on frame and forks Approx Age 6-7 Wheel Size 20" (ETRTO/ISO 451) Colours Red, White, Black, Team Sky Black, Team Sky White Weight 8.2 kg Frame 6061 T6 heat treated aluminium alloy, seat tube 30cm (12") Fork 6061 T6 heat treated aluminium alloy Crank set Frog Bikes Patented, 114mm, aluminium straight arm cranks, 32T chainring, black Bottom Bracket Neco, square taper, 68/107.5, cartridge bearings Pedals Wellgo R090, resin platform, single sided, toe clips (small), reflectors, 9/16" Front Hub Quando, aluminium, sealed hub, QR, 24 hole Rear Hub Quando, aluminium, sealed hub, QR, 28 hole, Shimano type free hub body, 9-speed Cassette Shimano 9 speed, 12-27T, (Team Sky Shimano 11t-32t Cassette) Rear derailleur Microshift RD-42s (Team Sky Shimano Sora), 9-speed Front derailleur n/a Chain KMC, 9-speed Rim Aluminium double wall, deep section, machined braking surface Seat Post Aluminium, micro adjust, 27.2mm Seat Clamp Aluminium, QR Headset Neco, 1"1/8 semi-integrated threadless, front brake hanger, Frog Bikes top cap Handlebar 6061 aluminium, custom drop bar, 320mm Stem Aluminium, 1"1/8, 38mm, 4 bolt clamp Bar tape Black bar tape Gear Shifter Microshift SBR492S, 9-speed, Jnr rapidfire plus, aluminium canti/roller-brake Brake levers Integrated to gear shifters & Tektro RL570 auxillary levers Brakes (F&R) Tektro Oryx, 992AG, alloy cantilever Saddle Frog Bikes, child specific slimline saddle (small), steel rails Tyres Primary Kenda K-1018, 20"x1”1/8, Road, (ETRTO/ISO 28-451) Tyres Secondary Kenda, K1153 20"x1”3/8, Cyclo-Cross, (ETRTO/ISO 37-451) Accessories box Bell, bike reflectors white/red, wheel reflectors orange/white, paint plasters, frame protector patches

In contrast to many kids' bikes, Frog bikes are sized by the leg length rather than age, as this is the most reliable way of getting the right size of bike for each child. Age alone isn’t a reliable measure as there is a large spread of “normal” leg lengths & heights for each age. Please take the time to measure the rider’s inside leg.
It’s easy to measure: Stand the child in socks against a wall Place a small book between their legs, as high as is comfortable Ask the child to move away and measure from the top of the book to the floor. Once you have measured the inside leg, use this table to find the right size of bike for your child. Note we give the MINIMUM inside leg length for each bike, with the saddle at its lowest setting. At this height, the child will safely and comfortably be able to get their feet on the ground. Don’t worry - Frog Bikes have long seat posts, so the saddle can be raised a long way as the rider grows.
We recommend that you go to a local store who will have many of our bikes available so the rider can sit on a bike.You will get help and advice on sizing, and get on-going service, as well assupport.
PLEASE NOTE we always recommend that you buy your Frog bike from your local Frog store, who will build it for you and ensure the fit is right for your child. Our bikes should always be built and checked by a qualified mechanic.
  Minimum inside leg in cm (in) Approx age Wheel Size Frame Size Tadpole Mini 24cm 1-2 10" Tadpole 31cm (12") 2-3 12" Tadpole Plus 38cm(15") 3-4 14" Frog 43 43cm(17") 3-4 14" 9" Frog 48 48cm(19") 4-5 16" 9.5" Frog 52s 52cm 5-6 20" 10" Frog 52 52cm(20") 5-6 20" 10" Frog 55 55cm(22") 6-7 20" 11" Frog 62 62cm(24") 8-10 24" 12" Frog 69 69cm(27") 10-12 26" 14" Frog 73 73cm(29") 12-14 26" 16" Frog 78 78cm (31") 13+ 26" 18" Frog Road/Track 58 58cm(23") 6-7 20" 11" Frog Road/Track 67 67cm(26") 8-12 24" 14" Frog Road/Track 70 70cm(27") 11-14 26" 17" Frog MTB 62 62cm (24") 8-10 24" 12.5" Frog MTB 69 69cm (27") 10-12 26" 15" Frog MTB 72 72cm (28") 13+ 26" 16"

This 26 inch kids' road bike, with 18 speed gears, is ideal for kids aged between 11 and 14 years old with a minimum inside leg of 70cm

Wheel Size: 26" inch

Why buy a Frog Road 70? - Narrow and short-drop child-specific handlebars
- 18-speed gears with Microshift short-reach brake levers
- Auxillary brake levers for added confidence
- Lightweight but sturdy frame
- Tektro Oryx cantilever brakes
- Patented short Frog cranks for easier pedalling (140mm)
- Quick release seat post for easy height adjustment
- Free 5 year warranty on frame and forks
  Approx Age 11-14 Wheel size 26" (ETRTO/ISO 559) Colours Red, White, Black, Team Sky Black Weight 9.3 kg Frame 6061 T6 heat treated Aliminium alloy Fork 26" Aluminium Alloy 6061 Frog Fork Chain Wheel 34/42T. 140 mm Aluminium Alloy Crank with chain guard Brakes Tektro Oryx (992AG) Aluminium Alloy Cantilever, black Stem 60mm Handlebar Frog Bikes L:360mm Aluminium Alloy Drop bar, black Grip/tape Racing tape with caps (supplied in box) Saddle Frog Bikes racing saddle Seat Post Aluminium 350mm, black Pedal Wellgo R090 Medium Front wheel DA-30, Aluminium Alloy double wall brushed silver, CNC, 26*1.5, 14G, 24H, H:30, F/V ETRTO:559MM Rear wheel DA-30, Aluminium Alloy double wall brushed silver, CNC, 26*1.5, 14G, 24H, H:30, F/V ETRTO:559MM Hubs Quando Aluminium Alloy, black Road tyres Kenda K196 25*1 Black ETRTO: 559mm Cyclocross tyres Kenda K803A 26" x 1.38 Auxillary brake lever Tektro RL570 Left shifter Microshift SBR492S 2 speed Jnr Rapidfire Plus, Alloy for canti/roller-brake, black Right shifter Microshift SBR492S 9 speed Jnr Rapidfire Plus, Alloy for canti/roller-brake, black Front derailleur Microshift 2 speed FD-R32S Rear derailleur Microshift short cage RD-R42s, black Casette Shimano 9 speed, 12-27T Reflectors Wheels (yellow and white both supplied), front, rear Bell L/R handed Accessories box Bell, bike reflectors white/red, wheel reflectors orange/white, paint plasters, frame protector patches


In contrast to many kids' bikes, Frog bikes are sized by the leg length rather than age, as this is the most reliable way of getting the right size of bike for each child. Age alone isn’t a reliable measure as there is a large spread of “normal” leg lengths & heights for each age. Please take the time to measure the rider’s inside leg.
It’s easy to measure: Stand the child in socks against a wall Place a small book between their legs, as high as is comfortable Ask the child to move away and measure from the top of the book to the floor. Once you have measured the inside leg, use this table to find the right size of bike for your child. Note we give the MINIMUM inside leg length for each bike, with the saddle at its lowest setting. At this height, the child will safely and comfortably be able to get their feet on the ground. Don’t worry - Frog Bikes have long seat posts, so the saddle can be raised a long way as the rider grows.
We recommend that you go to a local store who will have many of our bikes available so the rider can sit on a bike.You will get help and advice on sizing, and get on-going service, as well assupport.
PLEASE NOTE we always recommend that you buy your Frog bike from your local Frog store, who will build it for you and ensure the fit is right for your child. Our bikes should always be built and checked by a qualified mechanic.
  Minimum inside leg in cm (in) Approx age Wheel Size Frame Size Tadpole Mini 24cm 1-2 10" Tadpole 31cm (12") 2-3 12" Tadpole Plus 38cm(15") 3-4 14" Frog 43 43cm(17") 3-4 14" 9" Frog 48 48cm(19") 4-5 16" 9.5" Frog 52s 52cm 5-6 20" 10" Frog 52 52cm(20") 5-6 20" 10" Frog 55 55cm(22") 6-7 20" 11" Frog 62 62cm(24") 8-10 24" 12" Frog 69 69cm(27") 10-12 26" 14" Frog 73 73cm(29") 12-14 26" 16" Frog 78 78cm (31") 13+ 26" 18" Frog Road/Track 58 58cm(23") 6-7 20" 11" Frog Road/Track 67 67cm(26") 8-12 24" 14" Frog Road/Track 70 70cm(27") 11-14 26" 17" Frog MTB 62 62cm (24") 8-10 24" 12.5" Frog MTB 69 69cm (27") 10-12 26" 15" Frog MTB 72 72cm (28") 13+ 26" 16"

This 26 inch kids' bike is a great hybrid for 12-14 year olds with a minimum inside leg of 73cm.

Wheel Size: 26" inch

Why buy a Frog 73?

- Lightweight but sturdy Frame
- Tektro brakes with small easy to reach brake lever
- Shimano 8-speed gears with easy-change thumb-shifters
- Patented Frog cranks for easier pedalling
- Quick release seat post for easy height adjustment
- Free 5 year warranty on frame and forks
- Reflectors, mudguard and bell included
  Approx Age 12-14 Wheel Size 26" (ETRTO/ISO 559) Colour Orange, Neon Red, Neon Green, Dark Grey, Union Jack and Team Sky Black Weight 9.75 kg Frame 6061 T6 heat treated Aluminium alloy, seat tube 16" (406mm) Fork 6061 T6 heat treated Aluminium alloy Crank set / Chainring Frog Bikes Patented, 146mm, Aluminium straight arm cranks, 34T chainring, black Bottom Bracket Neco, square taper, 68/107.5, cartridge bearings Pedals Resin platform, 9/16" thread, reflectors Front Hub Quando, Aluminium, sealed hub, QR, 28 hole Rear Hub Quando, Aluminium, sealed hub, QR, 28 hole, Shimano type 8/9spd free hub body Cassette Shimano Altus, HG-31, 8-speed, 11-32t Rear Derailleur Shimano Altus, M310, 8-speed Chain KMC, 8-speed Rim Aluminium, 26"x1.5", double wall, machined braking surface Seat Post Aluminium, micro adjust, 27.2mm Seat clamp Aluminium, QR Headset Neco, 1"1/8 semi-integrated threadless, Frog Bikes top cap Handlebar Aluminium, flat bar, 520mm Stem Aluminium, 1"1/8, 60mm, 4 bolt clamp Grips Frog Bikes specific, lock on, slim grips Gear Shifter Shimano Alivio, M360, 8-speed, rapid fire Brake Levers Tektro JL510, Aluminium, easy reach Brakes (F&R) Tektro 836AL, Aluminium, linear pull Saddle Frog Bikes child-specific saddle (medium), steel rails Tyres Kenda K1153, 26"x1.75", MTB, (ETRTO/ISO 47-559) Mudguards Full length, resin, black Accessories box Bell, bike reflectors white/red, wheel reflectors orange/white, paint plasters (excl. Union Jack- touch up paint supplied), frame protector patches


In contrast to many kids' bikes, Frog bikes are sized by the leg length rather than age, as this is the most reliable way of getting the right size of bike for each child. Age alone isn’t a reliable measure as there is a large spread of “normal” leg lengths & heights for each age. Please take the time to measure the rider’s inside leg.
It’s easy to measure: Stand the child in socks against a wall Place a small book between their legs, as high as is comfortable Ask the child to move away and measure from the top of the book to the floor. Once you have measured the inside leg, use this table to find the right size of bike for your child. Note we give the MINIMUM inside leg length for each bike, with the saddle at its lowest setting. At this height, the child will safely and comfortably be able to get their feet on the ground. Don’t worry - Frog Bikes have long seat posts, so the saddle can be raised a long way as the rider grows.
We recommend that you go to a local store who will have many of our bikes available so the rider can sit on a bike.You will get help and advice on sizing, and get on-going service, as well assupport.
PLEASE NOTE we always recommend that you buy your Frog bike from your local Frog store, who will build it for you and ensure the fit is right for your child. Our bikes should always be built and checked by a qualified mechanic.
  Minimum inside leg in cm (in) Approx age Wheel Size Frame Size Tadpole Mini 24cm 1-2 10" Tadpole 31cm (12") 2-3 12" Tadpole Plus 38cm(15") 3-4 14" Frog 43 43cm(17") 3-4 14" 9" Frog 48 48cm(19") 4-5 16" 9.5" Frog 52s 52cm 5-6 20" 10" Frog 52 52cm(20") 5-6 20" 10" Frog 55 55cm(22") 6-7 20" 11" Frog 62 62cm(24") 8-10 24" 12" Frog 69 69cm(27") 10-12 26" 14" Frog 73 73cm(29") 12-14 26" 16" Frog 78 78cm (31") 13+ 26" 18" Frog Road/Track 58 58cm(23") 6-7 20" 11" Frog Road/Track 67 67cm(26") 8-12 24" 14" Frog Road/Track 70 70cm(27") 11-14 26" 17" Frog MTB 62 62cm (24") 8-10 24" 12.5" Frog MTB 69 69cm (27") 10-12 26" 15" Frog MTB 72 72cm (28") 13+ 26" 16"

This 26 inch kids' bike is a great hybrid for 10-12 year olds with a minimum inside leg of 69cm.

Wheel Size: 26" inch

Why buy a Frog 69?

- Lightweight but sturdy Frame
- Tektro brakes with small easy to reach brake lever
- Shimano 8-speed gears with easy-change thumb-shifters
- Patented Frog cranks for easier pedalling
- Quick release seat post for easy height adjustment
- Free 5 year warranty on frame and forks
- Reflectors, mudguard* and bell included
  Approx Age 10-12 Wheel Size 26" (ETRTO/ISO 559) Colours Red, Purple, Black, Green, Orange, Team Sky Black, Union Jack Weight 9.98 kg Frame 6061 T6 heat treated Aluminium alloy, seat tube 14" (355mm) Fork 6061 T6 heat treated Aluminium alloy Crank Set / Chainring Frog Bikes Patented, 140mm, Aluminium straight arm cranks, 34T chainring, black Bottom Bracket Neco, square taper, 68/107.5, cartridge bearings Pedals Resin platform, 9/16" thread, reflectors Front Hub Quando, Aluminium, sealed hub, QR, 28 hole Rear Hub Quando, Aluminium, sealed hub, QR, 28 hole, Shimano type 8/9spd free hub body Cassette Shimano Altus, HG-31, 8-speed, 11-32t Rear Derailleur Shimano Altus, M310, 8-speed Chain KMC, 8-speed Rim Aluminium, 26"x1.5", double wall, machined braking surface Seat Post Aluminium, micro adjust, 27.2mm Seat clamp Aluminium, QR Headset Neco, 1"1/8 semi-integrated threadless, Frog Bikes top cap Handlebar Aluminium, flat bar, 520mm Stem Frog Bikes Aluminium 60mm Stem Grip Frog Bikes Locking Slim Grips Gear Shifter Shimano Alivio, M360, 8-speed, rapid fire Brake Levers Tektro JL510, Aluminium, easy reach Brakes (F&R) Tektro 836AL, Aluminium, linear pull Saddle Frog Bikes child-specific saddle (medium), steel rails Tyres Kenda K1153, 26"x1.75", MTB, (ETRTO/ISO 47-559) Mudguards Full length, resin, black Accessories box Bell, bike reflectors white/red, wheel reflectors orange/white, paint plasters (excl. Union Jack- touch up paint supplied), frame protector patches



In contrast to many kids' bikes, Frog bikes are sized by the leg length rather than age, as this is the most reliable way of getting the right size of bike for each child. Age alone isn’t a reliable measure as there is a large spread of “normal” leg lengths & heights for each age. Please take the time to measure the rider’s inside leg.
It’s easy to measure: Stand the child in socks against a wall Place a small book between their legs, as high as is comfortable Ask the child to move away and measure from the top of the book to the floor. Once you have measured the inside leg, use this table to find the right size of bike for your child. Note we give the MINIMUM inside leg length for each bike, with the saddle at its lowest setting. At this height, the child will safely and comfortably be able to get their feet on the ground. Don’t worry - Frog Bikes have long seat posts, so the saddle can be raised a long way as the rider grows.
We recommend that you go to a local store who will have many of our bikes available so the rider can sit on a bike.You will get help and advice on sizing, and get on-going service, as well assupport.
PLEASE NOTE we always recommend that you buy your Frog bike from your local Frog store, who will build it for you and ensure the fit is right for your child. Our bikes should always be built and checked by a qualified mechanic.
  Minimum inside leg in cm (in) Approx age Wheel Size Frame Size Tadpole Mini 24cm 1-2 10" Tadpole 31cm (12") 2-3 12" Tadpole Plus 38cm(15") 3-4 14" Frog 43 43cm(17") 3-4 14" 9" Frog 48 48cm(19") 4-5 16" 9.5" Frog 52s 52cm 5-6 20" 10" Frog 52 52cm(20") 5-6 20" 10" Frog 55 55cm(22") 6-7 20" 11" Frog 62 62cm(24") 8-10 24" 12" Frog 69 69cm(27") 10-12 26" 14" Frog 73 73cm(29") 12-14 26" 16" Frog 78 78cm (31") 13+ 26" 18" Frog Road/Track 58 58cm(23") 6-7 20" 11" Frog Road/Track 67 67cm(26") 8-12 24" 14" Frog Road/Track 70 70cm(27") 11-14 26" 17" Frog MTB 62 62cm (24") 8-10 24" 12.5" Frog MTB 69 69cm (27") 10-12 26" 15" Frog MTB 72 72cm (28") 13+ 26" 16"

This 24 inch kids' bike is a great hybrid for 8 or 10 year olds with a minimum inside leg of 62cm.

Wheel Size: 24" inch

Why buy a Frog 62?

- Lightweight but sturdy Frame
- Tektro brakes with small easy to reach brake lever
- Shimano 8-speed gears with easy-change thumb-shifters
- Patented Frog cranks for easier pedalling
- Quick release seat post for easy height adjustment
- Free 5 year warranty on frame and forks
- Reflectors, mudguard and bell included
  Approx Age 8-10 Wheel Size 24" (ETRTO/ISO 507) Colour Red, Purple, Black, Green, Orange, Team Sky Black, Union Jack Weight 9.25 kg Frame 6061 T6 heat treated Aluminum alloy, seat tube 12" (305mm) Fork 6061 T6 heat treated Aluminum alloy Crank Set/ Chainring Frog Bikes Patented, 127mm, Aluminum straight arm cranks, 32T chainring, black Bottom Bracket Neco, square taper, 68/107.5, cartridge bearings Pedals Resin platform, 9/16" thread, reflectors Front Hub Quando, Aluminum, sealed hub, QR, 28 hole Rear Hub Quando, Aluminum, sealed hub, QR, 28 hole, Shimano type 8/9spd free hub body Cassette Shimano Altus, HG-31, 8-speed, 11-32t Rear Derailleur Shimano Altus, M310, 8-speed Chain KMC, 8-speed Rim Aluminum, 24"x1.5", double wall, machined braking surface Seat Post Aluminum, micro adjust, 27.2mm Seat clamp Aluminum, QR Headset Neco, 1"1/8 semi-integrated threadless, Frog Bikes top cap Handlebar Aluminum, flat bar, 500mm Stem Aluminum, 1"1/8, 50mm, 4 bolt clamp Grips Frog Bikes specific, lock on, slim grips Gear Shifter Shimano Alivio, M360, 8-speed, rapid fire Brake Levers Tektro JL510, Aluminum, easy reach Brakes (F&R) Tektro 836AL, Aluminum, linear pull Saddle Frog Bikes child-specific saddle (medium), steel rails Tyres Kenda K1153, 24"x1.75", MTB, (ETRTO/ISO 47-507) Mudguards Full length, resin, black Accessories box Bell, bike reflectors white/red, wheel reflectors orange/white, paint plasters (excl. Union Jack- touch up paint supplied), frame protector patches

In contrast to many kids' bikes, Frog bikes are sized by the leg length rather than age, as this is the most reliable way of getting the right size of bike for each child. Age alone isn’t a reliable measure as there is a large spread of “normal” leg lengths & heights for each age. Please take the time to measure the rider’s inside leg.
It’s easy to measure: Stand the child in socks against a wall Place a small book between their legs, as high as is comfortable Ask the child to move away and measure from the top of the book to the floor. Once you have measured the inside leg, use this table to find the right size of bike for your child. Note we give the MINIMUM inside leg length for each bike, with the saddle at its lowest setting. At this height, the child will safely and comfortably be able to get their feet on the ground. Don’t worry - Frog Bikes have long seat posts, so the saddle can be raised a long way as the rider grows.
We recommend that you go to a local store who will have many of our bikes available so the rider can sit on a bike.You will get help and advice on sizing, and get on-going service, as well assupport.
PLEASE NOTE we always recommend that you buy your Frog bike from your local Frog store, who will build it for you and ensure the fit is right for your child. Our bikes should always be built and checked by a qualified mechanic.
  Minimum inside leg in cm (in) Approx age Wheel Size Frame Size Tadpole Mini 24cm 1-2 10" Tadpole 31cm (12") 2-3 12" Tadpole Plus 38cm(15") 3-4 14" Frog 43 43cm(17") 3-4 14" 9" Frog 48 48cm(19") 4-5 16" 9.5" Frog 52s 52cm 5-6 20" 10" Frog 52 52cm(20") 5-6 20" 10" Frog 55 55cm(22") 6-7 20" 11" Frog 62 62cm(24") 8-10 24" 12" Frog 69 69cm(27") 10-12 26" 14" Frog 73 73cm(29") 12-14 26" 16" Frog 78 78cm (31") 13+ 26" 18" Frog Road/Track 58 58cm(23") 6-7 20" 11" Frog Road/Track 67 67cm(26") 8-12 24" 14" Frog Road/Track 70 70cm(27") 11-14 26" 17" Frog MTB 62 62cm (24") 8-10 24" 12.5" Frog MTB 69 69cm (27") 10-12 26" 15" Frog MTB 72 72cm (28") 13+ 26" 16"

This 20 inch kids' bike is a great geared bike for 6 or 7 year olds with a minimum inside leg of 55cm.

Wheel Size: 20" inch

Why buy a Frog 55? - Lightweight but sturdy Frame
- Tektro brakes with small easy to reach brake lever
-Shimano 8-speed gears with easy-change thumb-shifters
- Patented Frog cranks for easier pedalling
- Quick release seat post for easy height adjustment
- Free 5 year warranty on frame and forks
- Reflectors, mudguard* and bell included Approx Age 6-7 Wheel Size 20" (ETRTO/ISO 406) Colour Red, Purple, Pink, Green, Spotty, Orange, Team Sky Black, Union Jack Weight 8.55 kg Frame 6061 T6 heat treated Aluminum alloy, seat tube 11" (280mm) Fork 6061 T6 heat treated Aluminum alloy Crank Set / Chainring Frog Bikes Patented, 114mm, Aluminum straight arm cranks, 32T chainring, black Bottom Bracket Neco, square taper, 68/107.5, cartridge bearings Pedals Resin platform, 9/16" thread, reflectors Front Hub Quando, Aluminum, sealed hub, QR, 28 hole Rear Hub Quando, Aluminum, sealed hub, QR, 28 hole, Shimano type 8/9spd free hub body Cassette Shimano Altus, HG-31, 8-speed, 11-32t Rear Derailleur Shimano Altus, M310, 8-speed Chain Ring KMC, 8-speed Rim Aluminum, 20"x1.5", double wall, machined braking surface Seat Post Aluminum, micro adjust, 27.2mm Seat Clamp Aluminum, QR Headset Neco, 1"1/8 semi-integrated threadless, Frog Bikes top cap Handlebar Aluminum, flat bar, 460mm Stem Aluminum, 1"1/8, 38mm, 4 bolt clamp Grips Frog Bikes specific, lock on, slim grips Gear Shifter Shimano Alivio, M360, 8-speed, rapid fire Brake Levers Tektro JL510, Aluminum, easy reach Brakes (F&R) Tektro 836AL, Aluminum, linear pull Saddle Frog Bikes child-specific saddle (small), steel rails Tyres Kenda K1153, 20"x1.75", MTB, (ETRTO/ISO 47-406) Mudguards Full length, resin, black Accessories box Bell, bike reflectors white/red, wheel reflectors orange/white, paint plasters (excl. Union Jack- touch up paint supplied), frame protector patches


In contrast to many kids' bikes, Frog bikes are sized by the leg length rather than age, as this is the most reliable way of getting the right size of bike for each child. Age alone isn’t a reliable measure as there is a large spread of “normal” leg lengths & heights for each age. Please take the time to measure the rider’s inside leg.
It’s easy to measure: Stand the child in socks against a wall Place a small book between their legs, as high as is comfortable Ask the child to move away and measure from the top of the book to the floor. Once you have measured the inside leg, use this table to find the right size of bike for your child. Note we give the MINIMUM inside leg length for each bike, with the saddle at its lowest setting. At this height, the child will safely and comfortably be able to get their feet on the ground. Don’t worry - Frog Bikes have long seat posts, so the saddle can be raised a long way as the rider grows.
We recommend that you go to a local store who will have many of our bikes available so the rider can sit on a bike.You will get help and advice on sizing, and get on-going service, as well assupport.
PLEASE NOTE we always recommend that you buy your Frog bike from your local Frog store, who will build it for you and ensure the fit is right for your child. Our bikes should always be built and checked by a qualified mechanic.
  Minimum inside leg in cm (in) Approx age Wheel Size Frame Size Tadpole Mini 24cm 1-2 10" Tadpole 31cm (12") 2-3 12" Tadpole Plus 38cm(15") 3-4 14" Frog 43 43cm(17") 3-4 14" 9" Frog 48 48cm(19") 4-5 16" 9.5" Frog 52s 52cm 5-6 20" 10" Frog 52 52cm(20") 5-6 20" 10" Frog 55 55cm(22") 6-7 20" 11" Frog 62 62cm(24") 8-10 24" 12" Frog 69 69cm(27") 10-12 26" 14" Frog 73 73cm(29") 12-14 26" 16" Frog 78 78cm (31") 13+ 26" 18" Frog Road/Track 58 58cm(23") 6-7 20" 11" Frog Road/Track 67 67cm(26") 8-12 24" 14" Frog Road/Track 70 70cm(27") 11-14 26" 17" Frog MTB 62 62cm (24") 8-10 24" 12.5" Frog MTB 69 69cm (27") 10-12 26" 15" Frog MTB 72 72cm (28") 13+ 26" 16"

This 20 inch kids' bike is the ideal multi purpose geared bike for 5 or 6 year olds with a minimum inside leg of 52cm.

Wheel Size: 20" inch

Why buy a Frog 52? - Lightweight but sturdy Frame
- Tektro brakes with small easy to reach brake lever
- 8-speed Shimano easy-change thumb-shifter gears
- Patented Frog cranks for easier pedalling
- Quick release seat post for easy height adjustment
- Free 5 year warranty on frame and forks
- Reflectors, mudguard* and bell included

  Approx Age 5-6 Wheel Size 20" (ETRTO/ISO 406) Colour Red, Purple, Pink, Green, Spotty, Orange, Team Sky Black, Union Jack Weight 8.54 kg Frame 6061 T6 heat treated aluminium alloy, seat tube 10" (255mm) Fork 6061 T6 heat treated aluminium alloy Crank set / Chainring Frog Bikes Patented, 102mm, aluminium straight arm cranks, 32T chainring, black Bottom Bracket Neco, square taper, 68/107.5, cartridge bearings Pedals Resin platform, 9/16" thread, reflectors Front Hub Quando, aluminium, sealed hub, QR, 28 hole Rear Hub Quando, aluminium, sealed hub, QR, 28 hole, Shimano type 8/9spd free hub body Cassette Shimano Altus, HG-31, 8-speed, 11-32t Rear Derailleur Shimano Altus, M310, 8-speed Chain KMC, 8-speed Rim Aluminium, 20"x1.5", double wall, machined braking surface Seat Post Aluminium, micro adjust, 27.2mm Seat clamp Aluminium, QR Headset Neco, 1"1/8 semi-integrated threadless, Frog Bikes top cap Handlebar Aluminium, flat bar, 460mm Stem Aluminium, 1"1/8, 38mm, 4 bolt clamp Grips Frog Bikes specific, lock on, slim grips Gear Shifter Shimano Alivio, M360, 8-speed, rapid fire Brake Levers Tektro JL510, aluminium, easy reach Brakes (F&R) Tektro 836AL, aluminium, linear pull Saddle Frog Bikes child-specific saddle (small), steel rails Tyres Kenda K1153, 20"x1.75", MTB, (ETRTO/ISO 47-406) Mudguards Full length, resin, black Accessories box Bell, bike reflectors white/red, wheel reflectors orange/white, paint plasters (excl. Union Jack- touch up paint supplied), frame protector patches


In contrast to many kids' bikes, Frog bikes are sized by the leg length rather than age, as this is the most reliable way of getting the right size of bike for each child. Age alone isn’t a reliable measure as there is a large spread of “normal” leg lengths & heights for each age. Please take the time to measure the rider’s inside leg.
It’s easy to measure: Stand the child in socks against a wall Place a small book between their legs, as high as is comfortable Ask the child to move away and measure from the top of the book to the floor. Once you have measured the inside leg, use this table to find the right size of bike for your child. Note we give the MINIMUM inside leg length for each bike, with the saddle at its lowest setting. At this height, the child will safely and comfortably be able to get their feet on the ground. Don’t worry - Frog Bikes have long seat posts, so the saddle can be raised a long way as the rider grows.
We recommend that you go to a local store who will have many of our bikes available so the rider can sit on a bike.You will get help and advice on sizing, and get on-going service, as well assupport.
PLEASE NOTE we always recommend that you buy your Frog bike from your local Frog store, who will build it for you and ensure the fit is right for your child. Our bikes should always be built and checked by a qualified mechanic.
  Minimum inside leg in cm (in) Approx age Wheel Size Frame Size Tadpole Mini 24cm 1-2 10" Tadpole 31cm (12") 2-3 12" Tadpole Plus 38cm(15") 3-4 14" Frog 43 43cm(17") 3-4 14" 9" Frog 48 48cm(19") 4-5 16" 9.5" Frog 52s 52cm 5-6 20" 10" Frog 52 52cm(20") 5-6 20" 10" Frog 55 55cm(22") 6-7 20" 11" Frog 62 62cm(24") 8-10 24" 12" Frog 69 69cm(27") 10-12 26" 14" Frog 73 73cm(29") 12-14 26" 16" Frog 78 78cm (31") 13+ 26" 18" Frog Road/Track 58 58cm(23") 6-7 20" 11" Frog Road/Track 67 67cm(26") 8-12 24" 14" Frog Road/Track 70 70cm(27") 11-14 26" 17" Frog MTB 62 62cm (24") 8-10 24" 12.5" Frog MTB 69 69cm (27") 10-12 26" 15" Frog MTB 72 72cm (28") 13+ 26" 16"