MMR BILLET STEEL 3000 HP 4.6 Modular CRANKSHAFT SUPER STRONG 4340 US MADE Crankshaft - good up 3000 RWHP- for the serious competitor looking for the best! Full Radius on main and Rod bearings. Full counterweighted. As used by Team MMR. Available in STD and 3.750 or 3.800 stroke.