BC5139 - Mitsubishi 4B11T (Evo X) Crankshaft - 4340 Billet - 98mm Stroke

This 4340 billet crankshaft is engineered for ultimate performance. It undergoes stress relief, shot peening, magna flux inspection, and multi - step nitriding heat treatment. The fully profiled counterweights reduce windage in the crankcase, minimizing oil resistance and enhancing rpm potential. Specifications include a 98mm stroke, 52mm rod journal, 52mm main journal, and it weighs 37.2 Lbs.

Using this crankshaft is straightforward. Just make sure it's properly installed by a professional mechanic. When installing, double - check that all the parts fit well and the measurements match your engine. As for maintenance, regularly check the crankshaft for any signs of wear or damage. Keep it clean and lubricated to ensure smooth operation. If you notice any unusual noises or vibrations, have it inspected right away. Avoid over - revving the engine as it can put extra stress on the crankshaft and reduce its lifespan.