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Frog 52 Single Speed Kids Bike (20 Inch)


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Product Details

Frog 52 Single Speed - Gear Free 20 Inch (Wheels) Kids Bike

Looking for an even simpler, lighter weight Frog kids' bikes for boys and girls from 5 to 6 years old? Check out the Frog 52 Single Speed.

While gears can make cycling easier, not everyone uses them. Especially kids. Hence this gear-free Frog 52. Removing the shifter, mech, cable and freewheel makes this single speed a whole kilo lighter than the regular Frog 52 with gears. It also makes it less expensive.

Otherwise, it retains the features that make British-made Frogs our most popular kids' bikes ever.

What’s so great about Frog?
With a more aluminium-rich spec, with for instance alloy rigid forks rather than steel suspension forks, a Frog is almost always the lightest weight kids’ bikes for the money so it's much more fun to ride.

Sensible Sizing
Frog bikes are numbered by their standover height. For instance a Frog 52 is for a rider with a 52cm-plus inside leg measurement. (This is far more accurate than the traditional method of sizing kids’ bikes by wheel size.)

A Frog grows with the rider
Every Frog comes with a long QR seatpost to make it easy to adjust to the growing child.

Frog Bikes Keep Their Value
Because it’s so well made, a looked-after Frog will be fit to pass on once outgrown. Such a well respected British brand, Frog bikes are also among the easiest to sell on.

To find out more on Frog read our Blog.

Shop All Frog Bikes >

Shop All Kids Bikes >

Frog Bikes Size Guide >

Technical Specifications

Frog 52 Single Speed 
Wheel size20" (ETRTO/ISO 406)
Available coloursRed, Green
Weight7.76kg (17.1lbs)
Frame6061 T6 heat treated aluminium alloy, seat tube 10" (255mm)
Fork6061 T6 heat treated aluminium alloy
Crank setFrog Bikes patented aluminium straight arm cranks with Frog Bikes double chain guard, 114mm, steel 32t chainring
Bottom BracketNeco, square taper, 68/107.5, cartridge bearings
PedalsResin platform, 9/16" thread, w/reflectors
Front HubQuando aluminium black sealed with 5mm allen bolt internal fixing. 20 hole.
Rear HubQuando aluminium black sealed with standard freewheel thread and 5mm allen bolt internal fixing. 20 hole. Drive side chain tensioner.
FreewheelATA, standard ISO thread, 18t, 4 prong removal, chrome plated
ChainKMC, single speed
RimAluminium, 20x1.5, double wall, machined braking surface
Seat postAluminium, micro adjust, 27.2mm
Seat clampAluminium, QR
HeadsetNeco, 1"1/8, threadless headset, safety steering stop. Aluminium Frog Bikes top cap
HandlebarAluminium, straight, 460mm
StemAluminium, 1"1/8, 38mm, 4 bolt clamp
GripsSoft rubber grip with lock ring, 30mm OD
Brake leversTektro JL510, alloy, easy reach
Brakes (F&R)Tektro 836AL, aluminium, linear pull
SaddleFrog Bikes child-specific saddle (small), w/ steel rails
Tyres PrimaryKenda K154, 20x1.5, hybrid, (ETRTO/ISO 38-406)
MudguardsResin, black
Accessories boxBell, bike reflectors white/red, wheel reflectors orange/white, touch up paint, frame protector patches


Our suppliers reserve the right to change specifications and prices without notice. Edinburgh Bicycle Cooperative will do all it can to maintain prices and specifications on this web site, however we do reserve the right to change specifications and prices without notice. Similarly, despite the wonders of modern computers, it is realistic to expect the colour of any item bought to differ subtly from the image online.