Take your M8 to the next level by beefing up your 114" up to 128". This kit is the perfect combination of not only gaining performance but savings versus piecing all the parts individually. The kit comes with just about everything you want and need from S&S Cycle as they provide much higher quality cam, cam plate, high flow oil pump, valve springs, lifters, and pushrods. Wrinkle black finish Bolt on kit which requires no machining 4.250" bore Forged pistons 11.1:1 Compression ratio; Oil Pump/Cam Plate: Precision machined from billet aluminum Passage plugs are removable for servicing Independent scavenge sections for flywheel cavity and cam chest Debris screens in both scavenge pickups Magnet in cam chest to help to stop debris from accessing the oil pump Increased flow capacity on both feed and scavenge side; Pushrods: Quickee pushrods with chrome covers; Tappets: Premium S&S tappets; Tappet Cuffs: Hard anodized black coating Billet aluminum construction Built stronger than stock material which eliminates distortion Tappet stability is improved in high lift and high rpm situations; Camshaft: 550 gear driven cam Gear drive kits allow improved cam timing accuracy and eliminates stock chain tensioner Gear drive kits include outer drive gears; Valve Springs: High performance conical single wire spring Includes top collars, keepers, and valve seals/bottom collars