S&S Cycle 129" Power Package Engine Performance Kit

Highlights

• Big bore bolt-on kit increases 107" M8 to 129" with no case machining required.
• Big bore 4.320" cylinder with 11.0:1 forged pistons.
• S&S oil pump/cam plate.
• Passage plugs are removable for servicing.
• Independent scavenge sections for flywheel cavity and cam chest.
• Debris screen in both scavenge pickups.
• Magnet in cam chest to help prevent debris from entering the oil pump.
• Increased oil flow capacity on both the oil feed and scavenge side.
• Adjustable pressure relief valve can be adjusted with the unit installed in the engine.
• Quickee pushrods with pushrod tubes.
• S&S premium tappets.
• S&S hard anodized, coated tappet cuffs are billet aluminum construction.
• S&S valve springs; work with cams up to 0.605" lift.
• High performance conical single wire spring design.
• HPT496 cam designed for big bore applications.
• MLS (multi-layered steel) head gasket.
• Includes 129 cam cover badge.
• Made in the USA.
• Retains stock engine height.
• Works with stock crankcases.
• Works with the stock and S&S roller rocker arms.
• Original engine serial numbers are retained.
• Compatible with the stock valve springs, both first generation (round port) and second generation (oval port).
• Pushrod Tubes.