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FROG 55 20" Wheel

1,000.00 LBS

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Product Description

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

Why buy a Frog 55?

Increases comfort for a more enjoyable ride

Change gears using just a thumb, so the hand remains in the perfect riding position

Reduced distance between pedals increases efficiency and comfort



    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
  • Two sets of tyres: hybrid and off-road
  • 5 year warranty on frame and forks
  • Reflectors, mudguard and bell included
  • Product Specs

    Approx Age 6-7
    Wheel Size 20" (ETRTO/ISO 406)
    Color Red, Purple, Pink, Green, Spotty, Orange, Team Sky Black, Union Jack
    Weight 19.4 lbs
    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 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
    Tires Primary Kenda K154, 20"x1.5", hybrid, (ETRTO/ISO 40-406)
    Tires Secondary 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, touch up paint, 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, in cm.

    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.

      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 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"

    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).

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