S&S CYCLE Engine Performance Kit — 129", 11.0:1, Gear Drive – 18-26 Softail, 24-26 Touring, 17-26 Trike, 25 CVO

Built as an aftermarket power package for compatible M8 applications, including VVT models.

Big bore bolt-on design increases a 107" M8 to 129" with no case machining required and retains stock engine height.

• Compatible with stock crankcases, stock and S&S roller rocker arms, and stock valve springs for both first generation (round port) and second generation (oval port) setups.
• Includes an S&S oil pump/cam plate with removable passage plugs for service access.
• Independent scavenge sections, debris screens in both pickups, a cam chest magnet, and increased oil flow capacity help support cleaner oil control.
• Adjustable pressure relief valve can be adjusted with the unit installed in the engine.
• Includes Quickee pushrods with pushrod tubes, S&S premium tappets, S&S valve springs, MLS head gasket, and a 496 camshaft.

Made in the USA and designed to retain original engine serial numbers.