S&S CYCLE Power Pack - 4.375" Stroke - Water Cooled - Black w/Highlights - M8 310-1051C

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

Features

• 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
• 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
• Quickee pushrods
• Hand assembled to exacting tolerances
• Reduced valve train noise from start up to shut down
• Close tolerances for low leak down rates
• Hard anodized black coating
• Billet aluminum construction
• Tappet stability in high lift and high rpm sitiuations
• S&S 550 camshaft - designed for big bore applications
• Works well with camshafts up to 0.605" lift
• High performance conical single wire spring
• Includes top collars, keepers, valve seals and bottom collars
• Oil Pump/Cam Plate:
• Pushrods:
• Tappets:
• Tappet Cuffs:
• Camshaft:
• Valve Springs:
• Not for any Trike models.
• Intake/rocker cover gaskets not included.

Specifications

• Bore Size: 4.250"
• Cam Drive Type: Gear
• Color/Finish: Black
• Compression Ratio: 11.1:1
• Cooling System: Water Cooled
• Displacement: 124"
• Features: Includes Outer Drive Gears
• Model: Power Package
• Product Name: Performance Kit
• Riding Style: Street
• Stroke Length: 4.375"
• Type: Big Bore
• Units: Kit
• Country of Origin: US
• Package Dimensions: 27.5 L × 12.25 W × 20.5 H in
• Shipping Weight: 45.5 lb