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All products have accurate in stock quantities listed, if it shows in stock it’s actually in stock!
Free Shipping on orders over $69.99 to the continental 48 (Alaska & Hawaii orders, call 402-214-0706 to order).
All products have accurate in stock quantities listed, if it shows in stock it’s actually in stock!
S&S Cycle

S&S Cycle Power Package Performance Kit - 310-1227C For Harley Softail 2018-2024

MPN: 310-1227C SKU: 0904-0158
S&S Cycle

S&S Cycle Power Package Performance Kit - 310-1227C For Harley Softail 2018-2024

MPN: 310-1227C SKU: 0904-0158
Availability:
Only 3 left!
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 Specs Compression Ratio 11.0:1 Color/Finish Highlighted Fins Cooling System Oil Cooled Stroke Length 4-3/8" Cam Drive Type Gear Color/Finish Wrinkle Black Features Black Pushrod Tubes Units Kit Bore Size 4.320" Product Name Performance Kit Displacement 129" Model Power Package Riding Style Street Type Engine
Original price $3,497.95 - Original price $3,497.95
Original price
$3,497.95
$3,497.95 - $3,497.95
Current price $3,497.95

Product Details

Features

  • 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

Specs

Compression Ratio 11.0:1
Color/Finish Highlighted Fins
Cooling System Oil Cooled
Stroke Length 4-3/8"
Cam Drive Type Gear
Color/Finish Wrinkle Black
Features Black Pushrod Tubes
Units Kit
Bore Size 4.320"
Product Name Performance Kit
Displacement 129"
Model Power Package
Riding Style Street
Type Engine

Product Description

Features

  • 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

Specs

Compression Ratio 11.0:1
Color/Finish Highlighted Fins
Cooling System Oil Cooled
Stroke Length 4-3/8"
Cam Drive Type Gear
Color/Finish Wrinkle Black
Features Black Pushrod Tubes
Units Kit
Bore Size 4.320"
Product Name Performance Kit
Displacement 129"
Model Power Package
Riding Style Street
Type Engine

Part Numbers
Store SKU MFR. Product # Availability
0904-0158 310-1227C In Stock
Fitment
This product is vehicle specific. Select your vehicle to confirm fitment.

This Product Fits

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.

Features

  • 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

Specs

Compression Ratio 11.0:1
Color/Finish Highlighted Fins
Cooling System Oil Cooled
Stroke Length 4-3/8"
Cam Drive Type Gear
Color/Finish Wrinkle Black
Features Black Pushrod Tubes
Units Kit
Bore Size 4.320"
Product Name Performance Kit
Displacement 129"
Model Power Package
Riding Style Street
Type Engine