Listing includes both front and rear cylinder head assemblies with valves, springs, rocker arms, and shafts. We strongly recommend that this kit be installed by a qualified mechanic with experience working on these types of engines. This item is in the category "eBay Motors\Parts & Accessories\ATV, Side-by-Side & UTV Parts & Accessories\Engines & Engine Parts\Other Engine Parts". The seller is "bpratv" and is located in this country: US. This item can be shipped worldwide.