S&S Cycle – A New Generation of Performance: the MK136

The MK136 is the latest in the line of complete replacement engines for your Harley-Davidson® and S&S Cycle’s first for your 2017 and later models! The team took all of their proven performance parts for the M8 engines and made the biggest, most reliable option out there!

The Mk136 features the MK crankcase and its precision machined oil scraper, patented dual-spray piston cooling jets, and retention plate. It marries that to a set of 136” cylinders, forged pistons, and brand-new high-flow cylinder heads featuring .605” lift springs, .30” longer valves, and oversized intake and exhaust valves, topped off with exclusive breather boxes. This massive displacement is sure to create an equally massive increase in horsepower all while retaining stock engine height so it will fit into your 2017 and newer touring frames!

To find more information and detailed specs, check out the S&S website HERE or get them for yourself from your favorite local dealer today!