Eagle Forged 4340 Steel Crankshaft 4-Cyl with .125" Fillet Radiuses

Eagle Forged 4340 Steel Crankshaft — 4-Cyl, .125" Fillet Radiuses Brand: Eagle — Built for demanding performance engines The Eagle Forged 4340 Steel Crankshaft is engineered for high-horsepower 4-cylinder applications where strength, durability, and precision matter. Constructed from premium 4340 alloy, this crank features a non-twist forging and generous .125" fillet radiuses to resist fatigue and crankshaft failure under extreme loads. Material: Forged 4340 steel for superior tensile strength Fillet Radius: .125" for improved stress distribution and longevity Surface Treatment: Nitrided for wear resistance and enhanced fatigue life Finish: Micropolished journals for optimal bearing compatibility and oiling Design: Non-twist forging to maintain dimensional integrity at high RPM Note: Requires chamfered/narrowed bearings Ideal for race, turbo, or high-boost street builds, this crankshaft delivers reliable performance where standard cast or stock cranks fall short. Choose Eagle for a proven combination of strength, precision, and long-term durability.