The Frog City 53 kids' bike is a lightweight, 20-inch urban bike designed for young riders who need a practical, reliable ride for everyday journeys. With its easy step-through frame, upright riding position, and smooth-rolling city tyres, this bike is built for comfort and confidence on school runs, park rides, and trips around town.
City 53 – 20” Kids City Bike - Age 5–7
Why buy City 53 – 20” Kids City Bike - Age 5–7
Kids City Bikes
Frog City 53 | Lightweight 20-inch kids' urban bike
Looking for a stylish geared bike for your young city rider?
The Frog City 53 kids' bike is a lightweight, 20-inch urban bike designed for young riders who need a practical, reliable ride for everyday journeys. With its easy step-through frame, upright riding position, and smooth-rolling city tyres, this bike is built for comfort and confidence on school runs, park rides, and trips around town. Fully equipped with thoughtful features like mudguards, a pannier rack, and a kickstand, the Frog City 53 combines style, safety, and efficiency, making it the perfect geared bike for daily city adventures. The Frog City 53 is suitable for children with an inside leg measurement of 49–65cm.
Kids' City bike designed for urban riding
The Frog City 53 20-inch kids' city bike is perfect for children aged 5 to 7 years, built specifically for safe, confident riding in towns and cities. Ideal for school runs, family trips, and exploring neighbourhood streets, this urban bike features an upright riding position that promotes comfort and visibility in traffic. Its step-through aluminium frame, adjustable handlebar (40mm range), and quick-release child-specific saddle ensure a perfect fit as your child grows, making it a practical, long-lasting choice for parents looking for a reliable kids' city bike.

Smooth pedalling with 8-speed gears
The Frog City 53 is equipped with FrogFit Technology® youth-specific 8-speed gears, making gear changes easy and intuitive. Combined with patented Frog cranks (made using 75% recycled aluminium), which reduce the distance between pedals, children can enjoy efficient, comfortable pedalling even on longer rides. The gearing is ideal for moderate urban speeds, helping kids develop strength, coordination, and confidence while riding on roads, cycle paths, and tarmac areas. The pedals are made from durable rice husks, using 50% less plastic without compromising strength, making the bike both eco-friendly and robust.

Lightweight step-through frame
Weighing just 8.45kg, the Frog City 53 is a light 20-inch kids' city bike. Its aluminium step-through frame makes getting on and off quick and safe, while the upright geometry and swept handlebars create a comfortable, ergonomic riding position. Perfect for urban cycling, this lightweight bike is easy for children to manoeuvre around towns and cities.

Safe and practical cycling through the city
Safety is a top priority on the Frog City 53. It features small, easy-to-reach brake levers for little hands, giving children excellent control and confidence. Slick, low-resistance Kenda city tyres provide smooth rolling on roads and pavements. The floating chain glider protects clothing from getting caught in the chain and reduces maintenance, making this bike a practical, parent-friendly choice for city streets.

Fully equipped for everyday adventures
The Frog City 53 comes fully fitted for daily urban cycling. It includes full-length mudguards, a kickstand for easy parking, and a rear pannier rack for carrying school books, sports kit, or other essentials. With these features, it's not just a lightweight city bike for kids; it's a practical, stylish, and versatile solution for school commutes, errands, and family rides.

Perfect for transitioning from first pedal bikes
When your child is ready to move on from a smaller bike, the Frog City 53 provides a safe, confident introduction to geared city cycling. With its upright geometry, smooth 8-speed gears, and thoughtful urban features, this 20-inch kids' city bike encourages independence, confidence, and a lifelong love of cycling in a city environment.
Built for safety, trusted by parents
Every Frog bike is rigorously tested to exceed international safety standards - because nothing matters more than your child's safety
Ready to ride - What's included?
The Frog City 53 kids' city bike comes fully equipped with essential safety features and practical urban accessories. This includes reflectors for increased visibility in traffic, full-length mudguards to keep clothes clean on wet streets, a bell to alert pedestrians and other cyclists, a kickstand for easy parking, and a rear pannier rack for carrying school books, sports kit, or other essentials.
Safety Note
The kickstand on this bike is designed to support the weight of the bike only. Do not sit on the bike while the kickstand is down, as this could damage the kickstand or frame or cause injury.
Bike assembly – Quick & easy setup
Your Frog bike arrives 95% pre-assembled to ensure safe delivery and a hassle-free setup experience. Only a few simple steps are needed to get your child’s new bike ready to ride:
Assembly steps:
- Align and secure the handlebars (pre-positioned for transit)
- Attach the pedals (packaged separately for safety)
Tools included:
- 5mm and 6mm hex keys (allen wrenches)
- 15mm open-end spanner
Protect their bike with warranty cover
Ride worry‑free with comprehensive coverage and optional extended protection.
2 Year Standard Warranty
Free warranty on all bikesAt Frog Bikes, we stand by the quality of our products with a standard 2-year warranty covering all frames, forks, parts, and paintwork (excluding tyres and inner tubes). Suspension forks are also covered by a 2-year warranty but are not included in our extended warranty offer.
Warranty Plus
Free upgrade to 10‑year coverLooking for extra peace of mind? We offer a FREE 10-year extended consumer warranty on frames and forks (excluding MTB suspension forks) when you complete and submit our Warranty Plus application within 28 days of purchase.
This frog bikes extended warranty is available for new, full-priced bikes and bikes purchased directly from our Frog Factory Outlet. For full details, please visit the Frog Bikes Warranty Plus application page below.
- FREE 10-year frame & fork cover
- Simple online activation
- Extended peace of mind
- Backed by Frog expertise
Note: The Warranty Plus offer is non-transferable.
Assembled, checked & delivered with care
Your Frog bike is built, inspected, and delivered to your door with free standard delivery to mainland UK addresses.
Free delivery
Free standard delivery is available for UK consumer orders shipping to mainland UK addresses.*
Arrives pre‑assembled
All Frog kids' bikes are carefully assembled, quality-checked, and typically dispatched within 5 business days of order confirmation.
Packaged with care
Our packaging is 82% recycled, 100% recyclable, and virtually plastic-free.
*For deliveries to non-mainland UK addresses, such as Northern Ireland, the Isle of Man, the Channel Islands, or the Scottish Highlands and Islands, additional local taxes, customs fees, or carrier surcharges may apply. These charges are the responsibility of the customer.
We're here to help
We want you to have the best experience with your new Frog Bike, so our customer service team are only a click or call away!
Need help? We're here for you
Our friendly and knowledgeable customer support team is ready to assist you with anything you need, from order updates and product questions to assembly guidance and warranty information. We're here to make your experience smooth and stress-free.
Get in touch via email or phone, and we’ll be happy to help!
Got questions?
Before reaching out, check out our Frequently Asked Questions (FAQ) page; it’s the quickest way to find clear, helpful answers to common queries. From choosing the right bike size and understanding delivery times to assembly tips and warranty info, we’ve covered all the essentials.
If you can't find what you're looking for, our support team is always just a click away.
| Approximate Age | 5-7 years |
|---|---|
| Product Safety Certifications | ISO 4210 and CPSC 1512 (CFR 1512) |
| Bike Weight | 8.45kg (with pedals) / 9.71kg (with pedals & accessories) |
| Frame | 6061 T6 heat treated Aluminum alloy, seat tube 11" (280mm) |
| Fork | 6061 T6 heat treated Aluminum alloy, seat tube 11" (280mm) |
| Front Hub | Quando, Aluminum, sealed hub, QR, 20 hole |
| Rear Hub | Quando, Aluminum, sealed hub, QR, 20 hole, Shimano type 8/9spd free hub body |
| Rim | Aluminum, 20", double wall, machined braking surface |
| Seat Clamp | Aluminum, QR |
| Headset | Neco, 1"1/8 semi-integrated threadless, Frog Bikes top cap |
| Stem | Aluminum, 1"1/8, 38mm, 4 bolt clamp |
| Brakes (F&R) | Tektro 836AL, Aluminum, linear pull |
| Tyres | Kenda K154, 20"x1.5", City, (ETRTO/ISO 38-406) |
| Mudguards | Full length, resin, black |
| Accessories Included | Bell, bike reflectors white/red, wheel reflectors orange/white, paint plasters, frame protector patches |
| Crankset/Chainring | Frog Bikes Patented,114mm, Aluminum straight arm cranks, 32T chainring, black |
| Bottom Bracket | Thun Shorty-ML-SL; square taper, 68/113.5 |
| Pedals | Frog Bikes, eco-friendly rice husk & plastic composite, with reflectors, 9/16" |
| Chain | KMC, 8-speed |
| Handlebar | Alloy, 540mm width, 60mm rise, 25º sweep |
| Brake Levers | Tektro JL510, Aluminum, easy reach |
| Saddle | Frog Bikes child-specific saddle (small), steel rails |
| Seat Post | Aluminum, micro adjust, 27.2mm |
| Gear Shifter | FrogFitTechnology®, youth-specific 8-speed with short lever travel and ultraslick gear cable |
| Rear Derailleur | Shimano Altus, M310 OR Microshift, Mezzo, RD-M36S, short cage, 8-speed |
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| A - Wheelbase (mm) | 870 |
|---|---|
| B - Seat Tube Angle (°) | 74 |
| C - Head Tube Angle (°) | 71 |
| D - Effective Top Tube (mm) | 444.5 |
| E - Head Tube Length (mm) | 170 |
| F - Chain Stay Length (mm) | 370 |
| G - Seat Tube Length (mm) | 280 |
| H - Bottom Bracket to Floor (mm) | 216 |
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