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

Build more power from your M8 with this bolt-on big-bore kit that increases 107" engines to 129" without case machining.

It includes 4.32" bore cylinders, 11.0:1 forged pistons, S&S 550 cams, Quickee pushrods, premium tappets, and valve springs designed for cams up to 0.605" lift.

The S&S oil pump/cam plate adds increased oil flow capacity, removable passage plugs, independent scavenge sections, debris screens in both pickups, and a cam-chest magnet to help control debris.

All necessary gaskets, bearings, and hardware are included for bolt-on installation. Made in the USA. Not for Trike models.