Eagle 4340 Forged Steel 84.7mm Stroker Crankshaft Honda Civic Si Del Sol B16A B16A1 B16A2

Note: It is a known issue that due to casting variation and the counterweight design of this crankshaft that in some rare cases you'll need to grind the block for fitment.


Eagle forged 4340 steel cranks offer maximum strength at an affordable cost. Eagle 4340 steel cranks are made from a non-twist forging, using certified 4340 steel. Multi-stage heat treated for greater strength, x-rayed and sonic tested to ensure quality. All snout, rod and main journals filet radius are .125" for added strength. They are also fully nitrided for greater longevity, and micro-polished to a 3 r.a. or less to maximize bearing life.