Increase the performance potential of your 2017 and newer Harley-Davidson Milwaukee-Eight engine with the S&S Cycle 131ci Hot Set Up Kit, Part SSC320-0623. Designed as a discreet sleeper package, this kit delivers a substantial displacement increase while preserving the motorcycle’s original appearance. The components install with stock crankcases, retain the factory engine height, and preserve the original engine serial numbers for a clean, factory-like result.
The kit includes the essential gaskets required for installation, along with a 131ci cam cover badge for owners who want to showcase the upgraded engine. Its Black Granite powder coat finish is designed to complement factory finishes, helping the larger-displacement engine blend naturally into the motorcycle. The installation requires no machine work, making this package a practical choice for building strong rear-wheel power without extensive case modifications.
The S&S Cycle SSC320-0623 kit features a 4.250-inch bore, 4.625-inch stroke, and an 11.0:1 compression ratio. It is engineered for use with 2017 and newer M8 applications and is intended for powersports use. Professional installation and appropriate tuning are recommended to help ensure reliable operation and to optimize the performance of the upgraded engine. This product is not CARB approved; review applicable emissions requirements before installation and use.
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