This crankshaft kit from MMR is designed for BIG HP blower applications to prevent breakage of the crankshaft snout (end). The crank features a Gigantic 1.600" double Keyed Snout vs. the factory 1.250".
Billet Steel Crankshaft (see stroke options below)
Integrated Billet Steel Crankshaft Gear (2011-2014 Style)
Custom SFI Approved Harmonic Balancer (not designed for use with ribbed pulley accessories unless added externally)
Front main seal Adapter & oil seal
ARP Crankshaft Bolt
Balanced to you Piston and Rod weight for no additional charge