A SIMPLE KEY FOR BIKE ENGINES EXPLAINED UNVEILED

Freehub (Rear Wheel Only) – the element in a modern bicycle’s rear wheel hub that allows the wheel to spin freely when coasting, but engages the drivetrain when pedaling. The cassette slots onto the freehub overall body.Resilient & Strong: The aluminum engine shell, iron gas tank with baking paint, a 415# steel chain with rust avoidance shot bl