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
Available colours: Red, Black, White and Team Sky Black.
|Wheel Size||20" (ETRTO/ISO 451)|
|Colours||Red, White, Black, Team Sky Black, Team Sky White|
|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|
|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 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).