S&S CYCLE 129" Power Package Engine Performance Kit
Only 3 Left!SKU: 3101397
Vehicle Fitment
$3,555.95
As low as $888.99/mo with or . (Pay in 4 interest-free payments)
S&S CYCLE 129" Power Package Engine Performance Kit (HPT496) Upgrade your 107" M8 to a 129" big-bore powerhouse with the S&S CYCLE 129" Power Package. This bolt-on gear-driven, oil-cooled kit delivers aggressive performance and durability without case machining while retaining original engine serial numbers and stock engine height. Key Features Big bore bolt-on kit: increases 107" M8 to 129" with no case machining required 4.320" big bore cylinder with 11.0:1 forged pistons S&S oil pump/cam plate for reliable high-flow lubrication Removable passage plugs for easier servicing Independent scavenge sections for flywheel cavity and cam chest Debris screens in both scavenge pickups Magnet in cam chest helps prevent debris from entering the oil pump Adjustable pressure relief valve can be tuned with unit installed Quickee pushrods with pushrod tubes and S&S premium tappets Black hard anodized, billet aluminum tappet cuffs S&S valve springs support cams up to 0.605" lift HPT496 cam engineered for big-bore performance MLS head gasket for strong sealing Includes 129 cam cover badge ; Made in the USA Compatibility & Fitment Retains stock engine height Works with stock crankcases Compatible with stock and S&S roller rocker arms Works with stock valve springs (first gen round port & second gen oval port) Specifications Displacement: 129" | Bore: 4.320" Compression Ratio: 11.0:1 Cooling: Oil Cooled Cam Drive: Gear | Color/Finish: Black (non-highlighted fins) Riding Style: Street | Model: Performance Kit (HPT496 Series) Weight: 44.5 lbs | Dimensions: 27.5" x 12.25" x 20"
Big bore bolt-on kit increases 107" M8 to 129" with no case machining required
Big bore 4.320" cylinder with 11.0:1 forged pistons
S&S oil pump/cam plate
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 pushrod tubes
S&S premium tappets
S&S hard anodized, black coated tappet cuffs are billet aluminum construction
S&S valve springs; work with cams up to 0.605" lift
High performance conical single wire spring design
HPT496 cam designed for big bore applications
MLS (multi-layered steel) head gasket
Includes 129 cam cover badge
Made in the USA
Retains stock engine height.
Works with stock crankcases.
Works with the stock and S&S roller rocker arms.
Original engine serial numbers are retained.
Compatible with the stock valve springs, both first generation (round port) and second generation (oval port).
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