FROG 20" KIDS BIKE ***AS NEW PRE-OWNED***

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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:

  1. Stand the child in socks against a wall
  2. Place a small book between their legs, as high as is comfortable
  3. Ask the child to move away and measure from the top of the book to the floor.

How to size a child for bike

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.

 

A Wheelbase (mm) 880
B Seat tube angle (degrees) 74
C Head tube angle (degrees) 71
D Effective top tube (mm) 454
E Head tube length (mm) 120
F Chain stay length (mm) 375
G Seat tube length (mm) 280
H BB to Floor (mm) 251