Manley Performance Forged 4340 Crankshaft Lightweight Non-Twist Forging

Manley Performance Forged 4340 Crankshaft – Lightweight Non-Twist Forging Engineered for high-performance builds , the Manley Performance Forged 4340 Crankshaft combines reduced mass with exceptional strength for quicker rev response, improved acceleration and long-term durability. Lightweight 4340 non-twist forging — optimizes rotating mass while resisting torsional deformation under extreme loads. Gun-drilled mains & lightened rod journals — significant weight savings for faster spool and improved throttle response. Fully profiled counterweights — precision balancing for smoother operation and reduced vibration at high RPMs. Multi-step heat treatment & nitriding — enhanced surface hardness and fatigue life for sustained performance. Micro-polished large radius journals — lower friction, improved oil film stability and extended bearing life. 100% magnafluxed, shot peened & stress relieved — rigorous QA processes to ensure integrity and reliability under race conditions. Ideal for race, street/strip and high-horsepower applications, this crankshaft delivers a balanced package of lightness, strength and precision finishing. Upgrade your bottom end with a component designed to perform when it matters most.