FITS ALL YAMAHA YFZ450 ATV CARB MODELS AND YEARS! DOES NOT FIT YFZ450R

Hotrods or Wiseco crankshaft with rod**CP or Wiseco forged piston**Piston ringsWristpinCirclipsComplete gasket kitSeal kitTiming chain
**COVID IS STILL CAUSING BACK ORDERS DAILY. WE STOCK THE EXACT SAME PARTS FROM DIFFERENT MANUFACTURERS SO THAT WHEN, NOT IF, BACK ORDERS HAPPEN WE HAVE AN ALTERNATE PART THAT IS THE SAME QUALITY TO SEND YOU. IF YOU ONLY WANT A CERTAIN BRAND PISTON OR CRANK JUST ASK!Piston uses race gas. Everything is new in the original packaging and the original manufacturer’s warranty applies.*

Please check your order thoroughly when you receive it and contact us if you have any issues at all. If you are not 100% happy with what you receive you are welcome to return it for a full refund, not questions asked! Thanks!!

*We recommend that this be installed by a qualified mechanic with experience doing this type of work. Warranty does not cover any failure that is a result of improper installation, improper break in, improper tuning, or misuse. For any warranty to be considered the part(s) in questions must first be sent to us for inspection. We can not warranty anything based on phone calls or photos alone.