This 20 inch kids' track 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 Track 58?
- Very lightweight frame
- Short-drop handlebars supplied with cushioned bar tape
- Patented short Frog cranks (114 mm)
- Quick release seat post for easy height adjustment
- Kenda track tyres
- Flip flop hubs for both fixed and free-wheel use
- Free 5 year warranty on frame and forks
Available in Green
This bike is designed for Track use and is not legal for road use without a front brake. This is available to purchase separately either online or through your local retailer.
|Wheel Size||20" (ETRTO/ISO 451)|
|Frame||6061 T6 heat treated aluminium alloy, seat tube 12" (300mm)|
|Fork||6061 T6 heat treated aluminium alloy|
|Crank set||Frog Bikes Patented,114mm, aluminium straight arm cranks, 36T 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"|
|Chain Ring||Steel Teeth ED 1/2*1/8*36T *114mm Aluminium Alloy Crank Black|
|Free Wheel / Fixed Wheel||16T Flip Flop Free Wheel / Fixed Wheel|
|Pignon arrière||16 dts|
|Moyeux arrière||Quando, aluminium, moyeux de piste flip-flop , 15mm track nuts , 28 trous|
|Moyeux avant||Quando, aluminium, 15mm , 28 trous|
|Stem||38mm Frog Stem (Can be swapped)|
|Handlebars||Frog Bikes special L:320mm Aluminium Alloy drop bar in black|
|Grip / Tape||Cushioned racing tape with caps (supplied in box)|
|Saddle||Frog Bikes Racing Saddle|
|Seat Post||Aluminium 250mm black|
|Pedals||Welgo R090 Black Plastic Pedal Small|
|Rims||DA-30 20*1.5*14G*28H Aluminium Alloy Double Wall Black H:30MM|
|Tyres||Kenda K-1018 rubber 20*1 1/8 Black ETRTO:451MM|
|Paint Pot||Touch up Paint|
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 as support.
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 Plus||38cm (15")||3-4||14"|
|Frog 43||43cm (17")||3-4||14"||9"|
|Frog 48||48cm (19")||4-5||16"||9.5"|
|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"|
Of course all children have different length arms and torsos too, so to ensure a comfortable riding position, the handlebar height can be tailored, and saddles can be slid backwards and forwards on their rails. (These adjustments are easy to do and just need an allen key; instructions are in the manual).