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Fast Shipping S&s Cycle Power Pack - 4.375" Stroke - Water Cooled - Black W/highlights - M8 310-1051c Gadget [f0cmduaj]

$138.99 $444.99 -69%

Bolt-on kitNo case machining requiredForged pistonsMade in the USAIncludes oil pump/cam plate, pushrods, tappets, tappet cuffs, 550 camshaft, valve springsOil Pump/Cam Plate:Precision machined from billet aluminumPassage plugs removable for servicing

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  • Bolt-on kit
  • 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 black 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

    Fitments

    2022 Harley-Davidson FLTRKSE CVO Road Glide Limited - -
    2020-2024 Harley-Davidson FLTRK Road Glide Limited - -
    2017-2024 Harley-Davidson FLHTK Ultra Limited - -
    2017-2021 Harley-Davidson FLHTKSE CVO Limited - -
    2017-2019 Harley-Davidson FLHTKL Ultra Limited Low - -
    2017-2019 Harley-Davidson FLHTCU Electra Glide Ultra Classic - -
    2017-2019 Harley-Davidson FLTRU Road Glide Ultra - -

    Fitment Disclosure

    This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.

What Our Customers Say

January 13, 2026

Absolutely no complaints!

A superb item that I would buy again.

- Lauren K..

January 13, 2026

Absolutely no complaints!

This is a very responsive and enjoyable tool to work with.

- Enjoyable_Experience.

January 13, 2026

Absolutely no complaints!

This is a product that is very impressive.

- Robert M..

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