
Manley Turbo Tuff billet crankshaft for Subaru EJ20/EJ25 applications is a high-strength forged 4340 crank built for boosted, high-horsepower engines. It replaces the factory crank with a precision-machined billet unit intended for durable operation under heavy load. Machined from Turbo Tuff 4340 billet, the crank features gun-drilled pins, knife-edged counterweights, heat treatment and nitriding for enhanced durability, plus stress relief, shot peening and 100% magnaflux inspection.
Manley Subaru EJ20/EJ25 4340 Billet 79mm Stroke Turbo Tuff Series Crankshaft