S&S CYCLE 129\" Power Package Engine Performance Kit — Bore 4.320\", Compression 11.0:1, Black – 17-25 Touring, 17-26 Trike

The 129\" Power Package Engine Performance Kit is a bolt-on big bore upgrade that increases performance while retaining stock fitment and engine height.

• Big bore cylinder with forged pistons for improved combustion and durability.
• Premium oil pump and cam plate with removable passage plugs for easier servicing.
• Independent scavenge sections for the flywheel cavity and cam chest, each with debris screens and a magnet to help protect the oil pump.
• Increased oil flow capacity on feed and scavenge sides, plus an adjustable pressure relief valve serviceable while installed.
• Quickee pushrods with pushrod tubes, premium tappets, and hard-anodized billet aluminum tappet cuffs.
• High-performance cam designed for big bore applications and multi-layer steel head gasket included.

The kit retains stock engine height, works with stock crankcases and standard roller rocker arms, and preserves original engine serial numbers for straightforward installation and registration.

Includes a cam cover badge and is made in the USA.