MMR Gen X Billet Steel Coyote Crankshaft Handles over 4000HP, Billet Steel construction, Gun drilled for reduced weight. Available in Multiple strokes. Full Radius on Main and Rod bearings. Crankshafts include balancing (we will need your rod/piston weights) These crankshafts are standard equipment on the MMR GenX racing engines which have proven to run in the 3.70's @ over 212mph!