S&S 310-1226D 129" 550 Big Bore Power Pack 18-26 107" Harley FL & Softail

S&S 310-1226D 129" 550 Big Bore Power Pack 18-26 107" Harley FL & Softail

$2,899.00
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Width:
12.00 (in)
Height:
12.00 (in)
Depth:
12.00 (in)
Current Stock:
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Description

S&S 310-1226D 129" 550 Big Bore Power Pack 18-26 107" Harley FL & Softail

 

  • 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
  • Notes
  • Will fit VVT models.
  • Not for any Trike models.
  • Intake/rocker cover gaskets not included.
Product Name Power Package
Style 550C
Model Performance Kit
Color/Finish Non-Highlighted Fins / Wrinkle Black
Features Black Pushrod Tubes / Cam Chain Tensioner
Stroke Length 4.375"
Displacement 129"
Bore Size 4.320"
Compression Ratio 11.0:1
Cam Drive Type Chain
Cooling System Oil Cooled
Units Kit
Riding Style Street

 

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