S&S CYCLE

POWER PK CHN M8 BKG WTR

128" Power Package Engine Performance Kit

  • Big-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight with no case machining required
  • 4-1/4" bore cylinders with 11:1 forged pistons
  • S&S oil pump/cam plate with blue anodized finish
  • 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 chrome pushrod tubes
  • S&S premium tappets
  • S&S hard-anodized, black coated tappet cuffs are billet aluminum construction
  • Improve tappet stability in high-lift, high-rpm situations
  • S&S 550 cams designed for big bore applications
  • S&S valve springs work with cams up to .605" lift
  • High-performance conical single-wire spring design
  • All necessary gaskets, bearings, and hardware for bolt-on installation is included
  • Made in the U.S.A.


  • Not recommended for Tri-Glide or other three wheel models including conversion due to lugging nature of these bikes.
    € 2.790,42 incl. VAT

    Out of stock

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    We prepare your vehicle for the road
    Large assortment
    Specialized in recreational vehicles
    128" Power Package Engine Performance Kit

  • Big-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight with no case machining required
  • 4-1/4" bore cylinders with 11:1 forged pistons
  • S&S oil pump/cam plate with blue anodized finish
  • 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 chrome pushrod tubes
  • S&S premium tappets
  • S&S hard-anodized, black coated tappet cuffs are billet aluminum construction
  • Improve tappet stability in high-lift, high-rpm situations
  • S&S 550 cams designed for big bore applications
  • S&S valve springs work with cams up to .605" lift
  • High-performance conical single-wire spring design
  • All necessary gaskets, bearings, and hardware for bolt-on installation is included
  • Made in the U.S.A.


  • Not recommended for Tri-Glide or other three wheel models including conversion due to lugging nature of these bikes.
    Article number
    09040094:310-1107B
    Bore Size
    4,250"
    Bore Size Imperial
    4.250"
    Cam Drive Type
    Chain
    Color/Finish
    Black Granite| Highlighted Fins
    Compression Ratio
    11,1:1
    Compression Ratio Imperial
    11.1:1
    Cooling System
    Oil Cooled| Water Cooled
    Displacement
    128"
    Model
    Power Package
    Product Name
    Performance Kit
    Research Value
    Finalized
    Riding Style
    Street
    Stroke Length
    4,500"
    Stroke Length Imperial
    4.50"
    Style
    Big Bore
    Type
    Engine
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    Why QFF?

    Specializing in recreational vehicles

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    Specializing in recreational vehicles

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