S&S CYCLE Engine Performance Kit — 129", 4.320", 11.0:1 – 18-26 Softail, 24-26 Touring, 17-26 Trike, 25 CVO

Built for M8 fitment, including VVT models, this S&S CYCLE engine performance kit is a big-bore bolt-on solution that increases a 107" M8 to 129" with no case machining required.

It includes an S&S oil pump/cam plate with removable passage plugs for servicing, independent scavenge sections for the flywheel cavity and cam chest, debris screens in both scavenge pickups, and a cam chest magnet to help keep debris away from the oil pump.

The kit also features increased oil flow capacity on both feed and scavenge sides, an adjustable pressure relief valve that can be adjusted with the unit installed, Quickee pushrods with pushrod tubes, S&S premium tappets, S&S hard-anodized black-coated tappet cuffs, S&S valve springs, an MLS head gasket, and a 496 camshaft.

Additional benefits include compatibility with stock and S&S roller rocker arms, retention of stock engine height and original engine serial numbers, and compatibility with stock valve springs, first-generation round-port and second-generation oval-port.

Made in the USA.