Manley Subaru EJ20/EJ25 4340 Billet 79mm Stroke Turbo Tuff Series Crankshaft

When you're building a high-horsepower Subaru EJ20 or EJ25 engine, you need a crankshaft that can handle the stress. This Manley Performance Turbo Tuff Series crankshaft is forged from 4340 billet material, a strong choice for boosted applications. It's designed to fit a range of Subarus, including models like the Impreza, Forester, and Legacy, as well as the Saab 9-2X and Baja.

Manley has put this crankshaft through a rigorous process to ensure its durability. The material itself is strong, but it's further enhanced with a multi-step heat treatment and nitriding process. To reduce weight and improve stability, the crank pin and counterweights are gun drilled, and the counterweights are knife-edged for precise balancing. You can trust that each crankshaft is also stress relieved, shot peened, and 100% magnafluxed to meet strict quality standards. Plus, the 'Direct Shot' oiling passages are optimized to send oil directly from the main gallery to each main bearing, helping to keep your bearings and journals well-lubricated and extending their life.

This crankshaft is a solid foundation for a serious engine build. It's important to consult the manufacturer's installation instructions for specific details regarding assembly and torque specifications, as well as any other components you might need for your build.