Built as a big-bore bolt-in upgrade, this S&S CYCLE Power Package increases compatible 114"/117" engines with 4.5" stroke M8 to 132" without case machining.
It combines 4.32" bore cylinders with 11.0:1 compression forged pistons, S&S 550 cams, Quickee pushrods, premium tappets, and S&S valve springs designed for cams up to 0.605" lift.
The included S&S oil pump/cam plate features an adjustable pressure relief valve, removable passage plugs, independent scavenge sections, debris screens in both pickups, and a cam chest magnet to help manage debris.
Made in the USA. Compatible with VVT models. Not for any Trike models. Intake/rocker cover gaskets not included.