The ZRP super lightweight stroker billet crankshaft for the Mitsubishi 4G63 is crafted from exceptionally durable EN40B steel, designed to withstand the most extreme conditions. EN40B is the toughest material available, offering hardening capabilities surpassing standard 4340 billet steel. This high-grade material allows an EN40B billet steel crankshaft engine to rev faster and more smoothly due to its unique harmonics. By increasing the stroke with a lightweight crankshaft, this stroker billet crankshaft, which weighs only 13.3kg, is perfect for high-revving engine builds, elevating your 4G63 build to new heights. Enhancing the stroke will boost the torque and power output of your engine. Additionally, the fully counterweighted and precisely balanced crankshaft increases torque and ensures your engine revs seamlessly.