5 ESSENTIAL ELEMENTS FOR ENGINE BIKE OIL

Freehub (Rear Wheel Only) – the component in a modern bicycle’s rear wheel hub which allows the wheel to spin freely when coasting, but engages the drivetrain when pedaling. The cassette slots on to the freehub system.By adding an engine into a bicycle, you may propel the bike ahead using the power of an engine rather than by your legs via peda