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Frog 52s Single Speed 20" Bike

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Original price $525.00 - Original price $525.00
Original price $525.00
$525.00 - $525.00
Current price $525.00
Color: Red

The perfect first pedal bike for the taller child.

Fits:  Children 5-7 yrs with a minimum of 20" inseam

Availability:  Green and Red are available to ship immediately.

This bike is a great confidence booster for a taller child just learning to pedal.  It can also be used as a balance bike by removing the pedals.   Super lightweight at 17 lbs with a long wheelbase making learning to balance easy and fun.  Before you know it, your child will be flying around.  The first pedal 52 is a great value bike for 5-6 year olds with a minimum inside leg of 20" (52cm). 

Wheel Size: 20" inch

Why buy a Frog 52s?

- Lightweight but sturdy frame
- Tektro brakes with small easy to reach brake lever
- Patented Frog cranks for easier pedalling
- Quick release seat post for easy height adjustment
- Kenda Knobby Tires
- Reflectors, mudguard and bell included

Free 5 year warranty on frame and fork

Tech Specs

Wheel size 20" (ETRTO/ISO 406)
Available colors Red, Green
Weight 7.76kg (17.1lbs)
Frame 6061 T6 heat treated aluminium alloy, seat tube 10" (255mm)
Fork 6061 T6 heat treated aluminium alloy
Crank set Frog Bikes patented aluminium straight arm cranks with Frog Bikes double chain guard, 114mm, steel 32t chainring
Bottom Bracket Neco, square taper, 68/107.5, cartridge bearings
Pedals Resin platform, 9/16" thread, w/reflectors
Front Hub Quando aluminium black sealed with 5mm allen bolt internal fixing. 20 hole.
Rear Hub Quando aluminium black sealed with standard freewheel thread and 5mm allen bolt internal fixing. 20 hole. Drive side chain tensioner.
Freewheel ATA, standard ISO thread, 18t, 4 prong removal, chrome plated
Chain KMC, single speed
Rim Aluminium, 20x1.5, double wall, machined braking surface
Seat post Aluminium, micro adjust, 27.2mm
Seat clamp Aluminium, QR
Headset Neco, 1"1/8, threadless headset, safety steering stop. Aluminium Frog Bikes top cap
Handlebar Aluminium, straight, 460mm
Stem Aluminium, 1"1/8, 38mm, 4 bolt clamp
Grips Soft rubber grip with lock ring, 30mm OD
Brake levers Tektro JL510, alloy, easy reach
Brakes (F&R) Tektro 836AL, aluminium, linear pull
Saddle Frog Bikes child-specific saddle (small), w/ steel rails
Kenda K1047, 20"x1.5", Hybrid, (ETRTO/ISO: 38-406)
Mudguards Resin, black
Accessories box Bell, bike reflectors white/red, wheel reflectors orange/white, touch up paint, frame protector patches



All Frog 52s bikes arrive 90% assembled. All you need to do is install the pedals, seat post, handlebars and front wheel.  If you decide you want the optional mud guards on your bike, these will need to be installed also.  

Our professional bike technician looks over every bike before it ships and switches the hand brakes to be standard for the US (rear on the right, front on the left).  


Customer Reviews
5.0 Based on 8 Reviews
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United States United States

First pedal bike.

After using a balance bike for about 3 years. It was time to upgrade to a pedal bike and it was an instant hit. The first time out he was riding and pedaling was the easy part. Excellent first pedal bike for a kid just learning to pedal.

Samual R.
United States United States

Great lightweight bike, excellent service from store

Lightweight bike. Store was great and had it sized correctly.

United States United States


I got this last year when RSP was the only place that I could find that had them in stock. After about an hour with the balance buddy attached, stretched out over three short trips, he was riding by himself for the first time yesterday. He loves it, and the customer service was excellent. I don't typically spend this type of money on something that I know he will grow out of sooner than later but I felt it was worth it to make learning easier and not discourage him from wanting to continue with it. It worked out, I am very happy with the purchase.

Ready, Set, Pedal Frog 52s Single Speed 20 Bike Review
Jack A.
United States United States

Some of the best bikes around!

We just now took it out of the box and assembled it (very easy). My grandson got on it and was up and running almost immediately! While it is almost two inches too tall at the crotch, so far he’s handling it just fine. The bike is so light that he’s already whipping it around like he’s been riding for years ! We’re big fans!!

United States United States

Good customer service

Well made light bike but it just didn’t fit my kids’ size. Easy return.

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