Frames are frequently aluminium or carbon fibre and use hydraulic disc brakes to prevent. The tyres are usually broader than those on an ordinary road bike for extra comfort and ease and traction. Brakes: Reputable halting electrical power is vital. You will discover possibly mechanical or hydraulic disc brakes. Hydraulic https://socialtechnet.com/story6315552/not-known-factual-statements-about-kids-bike