Eagle 4G63 Stroker 94mm Crankshaft For 7-Bolt (Evo)

This is the Eagle 4G63 stroker crankshaft, measuring 94mm for the stroke, and it's designed for the 7-bolt rear flange configuration. You'll receive the crankshaft itself, ready for installation into your compatible Mitsubishi Eclipse, Eagle Talon, Mitsubishi Lancer, or Plymouth Laser. This part is a significant upgrade for anyone looking to build a more powerful engine, especially if you're aiming for increased displacement and performance.

Eagle builds these crankshafts from forged 4340 steel, which is a strong material chosen for its ability to handle higher stresses. It features a non-twist forging process and .125-inch fillet radii, which are important for overall strength. Because of these stronger radii, you'll need to use chamfered or narrowed bearings when installing this crankshaft. The surface is nitrided and then micropolished, adding further durability and a smooth finish for better bearing life. This crankshaft offers a 3.700-inch stroke, allowing for a larger displacement when paired with the right pistons and bore size.

This crankshaft is a solid choice for serious engine builds where reliability and performance under demanding conditions are key. It's designed to be a direct replacement for the factory crankshaft in the specified 7-bolt 4G63 engines, but with enhanced strength and a longer stroke for increased power potential. Always refer to the manufacturer's installation instructions for proper bearing selection and assembly procedures.