Eliminate the weight of your flywheel and let your motor really twist like a 2-stroke. Kit allows you to set and build in timing into your motor. This unit is good up to 15,000 RPM's.

The inner rotor kit includes everything needed to install simply remove your stock flywheel and stator plate with wiring and set this IRK in its place. Set the distance in between pickups and rotor with a business card for the easiest installation. You will use the rev box that comes with this motor and your stock ignition coil.

Fits all Honda CRF50 and 70 motors, Jialing, Lifan, GPX, Sikk, Thumpstar, Pitster, RCM, MotoVert, Etc.

Wiring setup:

White to brown Black to red Both green wires to coil Yellow wire to coil