Wheel Size: 20″.
Frame: Durable steel frame.
Fork: Steel rigid fork – no suspension, to keep things simple and reliable for younger riders.
Drivetrain: Single speed – 40T chainring with 18T cog, making it easy to ride and maintain.
Brakes: V-brake front and rear – dependable stopping power in varied conditions.
Tyres: Typically 20×2.125″ (or up to 20×2.4″) tyres for good grip and stability on rougher ground.
Handlebars / Stem / Seatpost: Junior-sized components (e.g., 560mm bar width, 60mm stem) helping ensure the bike fits smaller riders well.
Suitable Rider Age / Height Range: While not always formally listed, many stores suggest ages ~8-10 or heights ~115-135 cm for 20″ size.
Size guide
Avalanche’s bike size guide is here to help you find the perfect size. Use your body’s height measurement to get an indication of which size bike frame is best suited to your height – for you.
This size table is only a suggestion. The optimal frame size also depends on your personal riding style.
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