S&S CYCLE 129" Power Package for M8 — 129", 11.0:1 – 18-23 Softail, 17-19, 21-23 Touring, 22 CVO, 17-23 Trike

Big-bore bolt-on kit for M8 engines that 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
• Removable passage plugs for easier servicing
• Independent scavenge sections for the flywheel cavity and cam chest
• Debris screen in both scavenge pickups and a cam chest magnet to help keep debris out of 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
• Quickee pushrods, S&S premium tappets, and hard-anodized black coated tappet cuffs
• S&S 550 cams, valve springs for up to 0.605" lift, and high-performance conical single wire spring design
• All necessary gaskets, bearings, and hardware included for bolt-on installation

Made in the USA. Not for any Trike models.