Bigger is better! That’s the American way, so it figures the patriots as S&S Cycle would offer revolutionary performance in the M8 power struggle. Billed as “the perfect sleeper package” the 131 ci kit for 2017 and up M8 models pumps up performance without having to machine the cases. The Dyno doesn’t lie!
“Boost engine performance with a bolt in kit to pump up the cubic inches of your M*,” says Howard Kelly, Vice President of Marketing. “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.
