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Manley Turbo-Tuff Series forged crankshafts for Mitsubishi 4G63/4G64 and Subaru EJ20/EJ25 applications are machined from 4340 billet material to handle high-horsepower and boosted environments. Counterweights are knife-edged for precise balance, and each crank is stress relieved, shot peened and magnafluxed as part of rigorous quality assurance. Multi-step heat treatment and nitriding increase strength and long-term durability.
Manley Mitsubishi 4G63/4G64 7 Bolt 4340 Forged 88mm Stroke Race Series Crankshaft
