Brand New Complete Top End Motor Rebuild Kit. Fits Yamaha YFZ450 CARB MODEL all years and models. Add reliable power at an affordable cost while still running pump gas! This Complete Top End Rebuild Kit Includes. 95mm Stock / Standard Bore Cylinder.Wiseco 11.4:1 Race Coated Piston Kit (Includes Rings, pin, & Clips). Cometic Top End Gasket Kit (With MLS Head Gasket). This is a bolt on kit with no machining required. Piston uses pump gas or race gas. This item is in the category "eBay Motors\Parts & Accessories\ATV, Side-by-Side & UTV Parts & Accessories\Engines & Components". The seller is "azquadparts" and is located in this country: US. This item can be shipped worldwide.