Black granite with highlighted cylinder fins, chain drive cam.

• Big-bore bolt-in kit increases 114"/117" engine with 4.5" stroke M8 to 132" engine with no case machining required
• S&S oil pump/cam plate with blue anodized finish
• 4.32" bore cylinders with 11.0:1 compression ratio forged pistons
• Debris screen in both scavenge pickups
• Independent scavenge sections for flywheel cavity and cam chest
• Passage plugs are removable for servicing
• S&S premium tappets
• Quickee pushrods
• Adjustable pressure relief valve can be adjusted with the unit installed in the engine
• Increased oil flow capacity on both the oil feed and scavenge side
• Magnet in cam chest to help prevent debris from entering the oil pump
• High-performance conical single wire spring design
• S&S valve springs work with cams up to 0.605" lift
• S&S 550 cams are designed for big bore applications
• S&S hard-anodized, black coated tappet cuffs are billet aluminum construction
• Made in the USA
• Exhaust gasket, cylinder base gasket, and head gasket included
• Not for 121" CVO.