S&S Cycle 2017+ M8 4.250in Bore 550G Cam w/ Chrome Pushrods Power Pack - Black Granite w/ Highlight

Big-bore bolt-on kit increases your 114in. with 4.5in. stroke M-Eight to 128in. with no case machining required. It includes 4-1/4" bore cylinders with 11:1 forged pistons, an S&S oil pump and cam plate with a blue anodized finish, removable passage plugs for easy servicing, independent scavenge sections for the flywheel cavity and cam chest with debris screens, a magnet in the cam chest to prevent debris from entering the oil pump, increased oil flow capacity on both feed and scavenge sides, and an adjustable pressure relief valve. The kit also includes Quickee pushrods with chrome pushrod tubes, S&S premium tappets, black-coated, billet aluminum tappet cuffs, S&S 550 cams (compatible with valve springs up to .605" lift), high-performance conical single-wire valve springs, and all necessary gaskets, bearings, and hardware for a straightforward bolt-on installation. Made in the U.S.A.