NOT KNOWN DETAILS ABOUT PREDATOR 212 GHOST TURBO KIT

Jockey wheel: amongst two little sprockets of the rear derailleur that guides the chain on to the cassette【110cc bicycle engine kit】The 110cc two-stroke bicycle engine package is powerful and sturdy, which could accelerate your bicycle to some most speed of 55 km/h, with fast speed, safe and stable, and excellent warmth dissipation performance.