Ready to Run & Loaded with FeaturesHeat-treated, stress-relieved 4340 steel2-piece forgings for increased strengthExtremely tight tolerancesBronze bushings for floating pinsX-rayed, sonic-tested, magnafluxed, and 100% machined3-D stroker design offers less weight without sacrificing strengthARP 7/16" 8740 cap screw boltsBolts have stroke design for monster cam clearances