ARP 12 point head nuts with washers. Hotrods HD Crank with rod. Installation and break in instructions. This is a bolt on kit that requires no machining of any kind.Runs on pump or race gas. All parts are new in the original packaging, and the original manufacturers' warranties apply. Please check your order thoroughly when receiving it. We ALWAYS STRONGLY recommend that this kit be installed by a qualified mechanic with experience working on these types of motors. Piston comes with specific instructions for setting the ring gap. If you do not follow these exactly your motor will fail. The item "05+ TRX400EX TRX 400EX Rebuild Kit Big Bore 89mm Complete Top Bottom End 440 cc" is in sale since Thursday, December 26, 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.