Installation, tuning, and break in instructions. Piston uses pump or race gas. We ALWAYS STRONGLY recommend that this be installed by a qualified mechanic with experience doing this type of work. The item "LTZ400 LTZ 400 Z400 Big Bore Kit 94 mil Cylinder 434 Top End Rebuild JE CP Pisto" is in sale since Tuesday, October 23, 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.