Quick view Compare Currently out of stock. Call or email us for order information or for ETA on part. CP PISTON KIT: YAMAHA YZ450F/WR450 '03-'05 13:1 95mm(KIT) - CPK1010 MSRP: Was: Now: $329.89 Quick view Compare Currently out of stock. Call or email us for order information or for ETA on part.