KN-93 Series EngineAllows the use of modern primary, transmission, clutch components and electrical system Correct length sprocket shaft for 1970-up primary and transmission Includes oil filter mount at generator location S&S Super Stock™ single-fire ignition system and polished billet timer protect engine with a three-step break-in rev-limiter for first 24 hours of operation Natural crankcases and black powdercoated cylinders and heads S&S Super E carb Made in the U.S.A.