Originally Posted by lolitsdaelan
I understand that it transfers the chain drive from the left side of the bike to the right side, but what is the actual use that I would gain from having one? From what I've heard if I don't have one I can still use the pedals on the bike, the pedals wont spin with the motor, and I can still shift gears fine.
Without a shift kit, your engine drive is a single speed, so your "I can still shift gears fine" statement only applies to leg power NOT engine power. You probably should see or get a regular bike engine kit. As soon as you bolt the left side engine kit sprocket to your spokes, you will understand you can't use your bike gearing with the engine.