TOP LATEST FIVE ENGINE BIKE NUMBER URBAN NEWS

Derailer Hanger: The derailer hanger is actually a element of the frame where the rear derailleur is attached. It is usually an built-in part in the frame on metal and titanium bikes but a separate, replaceable piece on aluminum and carbon fiber bikes.AIR-COOLING SYSTEM: By adopting an air cooling system, the temperature with the engine can be prom