S&S 93" Hot Set Up Kit for 1970-' 72 Harley-Davidson® big twin models includes 4-1/2" stroker flywheels assembled with mainshaft and rods, 3-5/8" bore cylinders and pistons complete, an S&S 514 cam kit, valve springs, adjustable chrome moly pushrods, a Super E carb kit, and installation instructions.