The MK136 is the latest in the line of complete replacement engines for your Harley-Davidson and S&S Cycle’s first for 2017 and later models.
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-inch cylinders; forged pistons; and brand-new, high-flow cylinder heads featuring 0.605-inch lift springs, 0.30-inch 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.
This three-quarter length jacket utilizes top grade Buffalo leather, warming 100g polyfill insulation and high strength, bonded nylon thread. Its chest vents combine with underarm sleeve vents and a rear exit vent to provide flow-through ventilation, while a main zipper closure and dual wind flap seals out the elements. The jacket includes two zippered hand warmer pockets, four bellows pockets and one internal pocket, and has pockets for optional CE-approved armor at the elbow and shoulder. The Lawndale Leather Jacket retails at $299.99. 
