140cc Pit Bike Inner Rotor Kit

Inner Rotor Kit

Kit includes: Magneto, CDI & diagram.

Eliminate the weight of your flywheel and let your motor really twist like a 2-stroke!!

To fit 138cc/140cc Pit Bike Engines and some other dirt bikes: 125cc, 150cc.

This product is a built-in magnetic rotor structure. It can get rid of the weight of flying wheel magnetic rotor so the engine becomes light and speedy.

The engine can run freely and well from idling to high speed of 15,000 RPM.