This is a bolt on kit! This kit comes with the following. New 440CC CYLINDER Ready to bolt on.The item "HONDA XR400 XR400R WISECO 440CC BIG BORE CYLINDER KIT 111" is in sale since Friday, January 12, 2018. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Other Engines & Engine Parts". The seller is "atvunlimited" and is located in Mount Vernon, Ohio. This item can be shipped worldwide.