S&S CYCLE Power Pack - 4.375" Stroke - Water Cooled - Black w/Highlights - M8

Highlights

• Bolt-on kit.
• With updated fins.
• No case machining required.
• Forged pistons.
• Made in the USA.
• Includes oil pump/cam plate, pushrods, tappets, tappet cuffs, 550 camshaft, valve springs.
• Oil Pump/Cam Plate:.
• Precision machined from billet aluminum.
• Passage plugs removable for servicing.
• Independent scavenge sections for flywheel cavity and camchest.
• Debris screens in both scavenge pickups.
• Magnet in camchest to help to stop debris from entering oil pump.
• 44% flow increase on supply side and 58% flow increase on scavenge side.
• Pressure relief valve is adjustable with unit installed in engine.
• Pushrods:.
• Quickee pushrods.
• Tappets:.
• Hand assembled to exacting tolerances.
• Reduced valve train noise from start up to shut down.
• Close tolerances for low leak down rates.
• Tappet Cuffs:.
• Hard anodized coating.
• Billet aluminum construction.
• Tappet stability in high lift and high rpm sitiuations.
• Camshaft:.
• S&S 550 camshaft - designed for big bore applications.
• Valve Springs:.
• Works well with camshafts up to 0.605" lift.
• High performance conical single wire spring.
• Includes top collars, keepers, valve seals and bottom collars.
• Not for any Trike models.
• Intake/rocker cover gaskets not included.
• Includes Outer Drive Gears.
• Quickee Pushrods w/Chrome Covers.