S&S CYCLE

POWERPAK OILCOOL 4.320BORE 4 3

129" Power Package for M8

  • Big-bore bolt-on kit increases 107" M8 to 129" with no case machining required
  • 4.32" bore cylinders with 11.0:1 compression ratio 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
  • S&S premium tappets
  • S&S hard-anodized, black coated tappet cuffs are billet aluminum construction
  • S&S 550 cams are designed for big bore applications
  • S&S valve springs work with cams up to 0.605" lift
  • High-performance conical single wire spring design
  • All necessary gaskets, bearings and hardware for bolt on installation included
  • Made in the USA
  • Not for any Trike models.


  • € 4.968,31 incl. VAT

    Out of stock

    Ask about delivery time
    We prepare your vehicle for the road
    Large assortment
    Specialized in recreational vehicles
    129" Power Package for M8

  • Big-bore bolt-on kit increases 107" M8 to 129" with no case machining required
  • 4.32" bore cylinders with 11.0:1 compression ratio 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
  • S&S premium tappets
  • S&S hard-anodized, black coated tappet cuffs are billet aluminum construction
  • S&S 550 cams are designed for big bore applications
  • S&S valve springs work with cams up to 0.605" lift
  • High-performance conical single wire spring design
  • All necessary gaskets, bearings and hardware for bolt on installation included
  • Made in the USA
  • Not for any Trike models.


  • Article number
    09040159:310-1224C
    Bore Size
    4,320"
    Bore Size Imperial
    4.320"
    Cam Drive Type
    Gear
    Color/Finish
    Highlighted Fins| Wrinkle Black
    Compression Ratio
    11,0:1
    Compression Ratio Imperial
    11.0:1
    Cooling System
    Oil Cooled
    Displacement
    129"
    Features
    Chrome Pushrod Tubes
    Model
    Power Package
    Product Name
    Performance Kit
    Research Value
    Finalized
    Riding Style
    Street
    Stroke Length
    4-3/8"
    Stroke Length Imperial
    4-3/8"
    Type
    Engine
    Units
    Kit

    In our showroom

    L7e

    Segway

    used

    Snarler 600GL AT6 Long | 2023

    From €

    In stock

    Offer: - € 1.500,00
    T

    Kawasaki

    new

    Brute Force 750 (2025) | 2025

    € 14.995,00
    €

    In stock

    L7e T

    Linhai

    new

    Landforce 650L EPS | 2026

    From €

    In stock

    T

    CFMoto

    new

    UFORCE U10 PRO Highland AGRI | 2026

    €

    In stock

    Why QFF?

    Specializing in recreational vehicles

    Wide selection

    We'll get your driveway ready for driving

    Wide selection

    Specializing in recreational vehicles

    Heading for your next adventure?

    Whether you're looking for a powerful quad, a reliable SSV, or the right accessories for your next ride, our team is here to help. With expert advice, fast delivery, and years of experience, we make sure you're equipped for every challenge, on and off the beaten track.

    Select a language