FORGED 4340 STEEL CRANK - MITSUBISHI 4G63, 3.937" STROKE, 7 BOLT REAR FLANGE

Eagle forged 4340 steel cranks feature a non-twist forging, .125" fillet radiuses for superior strength so chamfered / narrowed bearings required, nitrided surface, & micropolished to < 2 ra. Intended for the most demanding applications.

Highlights:

  • material: forged 4340 steel
  • intended balance: internal
  • target bobweight: call
  • stroke: 3.937"
  • rod journal: 1.771"
  • rod journal width: 1.05"
  • main journals: 2.244"
  • minimum rod length: 5.900"
  • typical weight: 34 lbs.
  • rear seal diameter: call
  • snout diameter: 1.26"
  • flywheel bolts: 7