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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 Performance Kit Power Package - 310-1227D For Harley Touring / Softail 2017-2026

MPN: 310-1227D SKU: 0904-0208
S&S Cycle

S&S Cycle Performance Kit Power Package - 310-1227D For Harley Touring / Softail 2017-2026

MPN: 310-1227D SKU: 0904-0208
Availability:
Only 1 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 Made in the USA Will fit VVT models. Not for any Trike models. Intake/rocker cover gaskets not included. Specs Compression Ratio 11.0:1 Features Black Pushrod Tubes Style 550G Displacement 129" Cam Drive Type Gear Color/Finish Wrinkle Black Stroke Length 4.375" Units Kit Color/Finish Highlighted Fins Bore Size 4.320" Cooling System Oil Cooled Model Performance Kit Product Name Power Package Riding Style Street
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
  • Made in the USA
  • Will fit VVT models.
  • Not for any Trike models.
  • Intake/rocker cover gaskets not included.

Specs

Compression Ratio 11.0:1
Features Black Pushrod Tubes
Style 550G
Displacement 129"
Cam Drive Type Gear
Color/Finish Wrinkle Black
Stroke Length 4.375"
Units Kit
Color/Finish Highlighted Fins
Bore Size 4.320"
Cooling System Oil Cooled
Model Performance Kit
Product Name Power Package
Riding Style Street

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
  • Made in the USA
  • Will fit VVT models.
  • Not for any Trike models.
  • Intake/rocker cover gaskets not included.

Specs

Compression Ratio 11.0:1
Features Black Pushrod Tubes
Style 550G
Displacement 129"
Cam Drive Type Gear
Color/Finish Wrinkle Black
Stroke Length 4.375"
Units Kit
Color/Finish Highlighted Fins
Bore Size 4.320"
Cooling System Oil Cooled
Model Performance Kit
Product Name Power Package
Riding Style Street

Part Numbers
Store SKU MFR. Product # Availability
0904-0208 310-1227D 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
  • Made in the USA
  • Will fit VVT models.
  • Not for any Trike models.
  • Intake/rocker cover gaskets not included.

Specs

Compression Ratio 11.0:1
Features Black Pushrod Tubes
Style 550G
Displacement 129"
Cam Drive Type Gear
Color/Finish Wrinkle Black
Stroke Length 4.375"
Units Kit
Color/Finish Highlighted Fins
Bore Size 4.320"
Cooling System Oil Cooled
Model Performance Kit
Product Name Power Package
Riding Style Street