2-shoe Clutch (for 40cc 4-stroke engines) show-faq-link It is best to use

It is best to use an impact wrench to do this

by UPS straight to your door

Almost fully assembled - put on the front wheel and tighten the handlebars

Any motorized bike will

If you are not willing to do

2-shoe Clutch (for 40cc 4-stroke engines) show-faq-link It is best to use2 shoe engine clutch for 40cc 4 stroke motors. Typical symptoms that indicate a broken or worn clutch: Your bike started making a terrible rattling noise in the engine. Rear wheel is locked up, when pulling on the pull start the back wheel immediately starts spinning. Bike cannot climb hills and giving it more gas makes the engine rev up but accelerate very poorly. To replace the clutch, you have to remove the four screws that hold the transmission