S&S CYCLE 132" Power Package Engine Performance Kit — 4.320" bore, 11.0:1 compression, Black – 17-25 Touring, 17-26 Trike

Built to deliver reliable bolt‑on big‑bore performance without case machining, this complete engine performance kit upgrades your M8 powerplant with forged components and robust oiling.

Key elements include a bolt‑on big‑bore cylinder with forged pistons, an S&S oil pump and cam plate, removable passage plugs for servicing, independent scavenge sections with debris screens and a magnet in the cam chest to protect the oil pump, and increased oil flow capacity on both the oil feed and scavenge sides.

The kit also features an adjustable pressure relief valve accessible while installed, Quickee pushrods with pushrod tubes, premium tappets, hard‑anodized billet tappet cuffs, high‑performance valve springs compatible with high‑lift cams, an HPT496 cam for big‑bore use, and an MLS head gasket with a cam cover badge.

Designed to retain stock engine height and serial numbers, it works with stock crankcases and roller rocker arms, and is made in the USA.