S&S CYCLE POWER PACK 129 HPT496 O/C GEAR 310-1399

129" Power Package Engine Performance Kit

• 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, black 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).