98mm 13:1 CP JE Wiseco forged piston. MAXLOCK HD head stud kit. Hotrods +3mm stroker crank with rod. Complete gasket kit - head base exhaust case covers pump covers. Complete crankcase oil seal kit.Water pump bearing and seal. This is a bolt on kit with no machining required. Piston uses pump or race gas. We ALWAYS recommend that this be installed by a qualified mechanic with experience doing this type of work. The item "KFX450 KFX450R KFX 450 Big Bore Stroker Crank Motor Engine Rebuild Kit 500cc" is in sale since Tuesday, January 8, 2019. 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.