FITS ALL YAMAHA YFZ450R AND YFZ450X YEARS AND MODELS! NEW nikasil plated 95mm cylinder. 11.7:1 Wiseco or CP hi comp pump gas forged piston. Hotrods HD crank with rod.Water pump rebuild bearing and mechanical seal. Complete top and bottom end gasket kit. Complete crankcase oil seal kit. This is a bolt on kit with no machining required. Piston uses pump or race gas. Everything is new in the original packaging. If you have ANY issue with something you order from us PLEASE let us fix the problem before you leave feedback. We 100% guarantee we will find a reasonable solution to any problem. We want happy customers always. We recommend that this be installed by a qualified mechanic with experience doing this type of work.
Piston comes with specific instructions for setting ring gap. If you do not follow these your motor will fail. The item "YFZ450R YFZ 450R Stock Engine Motor Rebuild Kit Complete Top Bottom End Crank" is in sale since Monday, August 13, 2018. This item is in the category "eBay Motors\Parts & Accessories\ATV, Side-by-Side & UTV Parts & Accessories\Engines & Components".
The seller is "bpracingatv" and is located in Upland, California. This item can be shipped worldwide.