Eagle Forged 4340 Steel Crankshaft 4-Cyl Non-Twist Forging with .125" Fillet ...

Eagle Forged 4340 Steel Crankshaft — 4-Cyl Non-Twist Forging Brand: Eagle Built for high-performance and endurance, the Eagle Forged 4340 Steel Crankshaft is engineered specifically for demanding 4-cylinder applications. Its non-twist forging and robust .125" fillet radiuses deliver outstanding fatigue resistance and longevity under extreme loads. Material: Premium 4340 forged steel for superior tensile strength Design: Non-twist forging minimizes distortion and improves balance at high RPM Fillet Radius: .125" fillet radiuses increase bearing life and reduce stress risers (requires chamfered/narrowed bearings) Surface Treatment: Nitrided surface for enhanced wear and fatigue resistance Finish: Micropolished journals for improved oil film and reduced friction Ideal for race, forced-induction, and high-output street engines, this crankshaft is manufactured to precise tolerances and inspected to ensure reliable performance. Note: installation requires chamfered or narrowed bearings to accommodate the larger fillet radius. Why choose Eagle Forged? Proven strength, advanced surface treatments, and precision finishing make this crankshaft a top choice for builders who demand durability and consistent power delivery.