Allows the use of modern primary, transmission, clutch components and electrical systemCorrect length sprocket shaft for 1970-up primary and transmissionIncludes oil filter mount at generator locationS&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 operationNatural crankcases and black powdercoated cylinders and headsS&S Super E carbMade in the U.S.A.