S&S Cycle Announces 131ci Kits for 2017-up M8 Models

VIOLA, WI – March 25, 2026 – (Motor Sports NewsWire) – The S&S Cycle 131 kit for 2017 and up M8 models is the perfect sleeper package. Boost engine performance with a bolt in kit to pump up the cubic inches of your M*. With a Bore and Stroke of 4.250” x 4.625” the 131 kit brings compression to 11.0:1 and requires no machine work for installation.

Cylinder finish matches stock so no one can tell you have upgraded, unless you install the included 131” cam cover badge. All necessary gaskets are included, and the kit retains stock engine height.

Sell Sheet with PNs and Prices HERE.

About S&S Cycle:

For over 65 years, S&S Cycle has been the leading manufacturer of Proven Performance motorcycle components, engines, and exhaust. George Smith and Stanley Stankos founded the company in 1958 in Blue Island, Illinois. Shortly after the founding of S&S, George and his wife Marjorie (whose maiden name was also Smith) bought out Stanley, and Smith & Stankos became Smith & Smith (S&S). In 1969, S&S moved from Blue Island to Viola, Wisconsin, and expanded to La Crosse, Wisconsin, in 2004. The technology has changed, but one thing remains: S&S Cycle is dedicated to delivering the ultimate customer experience in the powersports industry through proven performance.

For further information, please visit www.SSCycle.com

Source: S&S Cycle, Inc.

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