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

Built as an aftermarket engine performance kit for M8 applications, including VVT models.

• Big bore bolt-on kit increases a 107" M8 to 129" with no case machining required
• Retains stock engine height and works with stock crankcases
• Compatible with the stock and S&S roller rocker arms
• Original engine serial numbers are retained
• Includes S&S oil pump/cam plate with independent scavenge sections, removable passage plugs, debris screens, and a cam chest magnet
• Adjustable pressure relief valve can be set with the unit installed
• Includes Quickee pushrods with pushrod tubes, S&S premium tappets, S&S valve springs, MLS head gasket, and a 496 camshaft

Made in the USA.