Eagle Mitsubishi 4B11T 3.700in Billet Crank 5.659in H-Beam -4.5cc 90mm Pistons Rotating Assembly

If you're building a high-performance Mitsubishi 4B11T engine for serious competition, a strong rotating assembly is the heart of the build. This Eagle competition rotating assembly is designed to handle the stresses of racing, including nitrous and forced induction applications. It's a well-built package that gives you the core components needed to rebuild or upgrade your engine's bottom end with confidence.

This assembly starts with a 3.700-inch billet 4340 steel crankshaft, known for its strength and durability under high loads. Paired with the crank are 5.659-inch H-beam connecting rods, which are a popular choice for their robust design. These rods use 3/8-inch ARP 2000 bolts, a well-regarded fastener known for its reliability in performance applications. The pistons are forged 2618 aluminum, featuring an inverted dome design with a -4.5cc volume and a 90mm bore size, ready for precise fitting. The assembly also includes plasma-moly file-fit piston rings, allowing for custom ring gap setting to match your specific engine build and boost levels. To complete the package, King XP rod and main bearings are included, offering solid performance and wear resistance for critical rotating components.

When undertaking an engine build of this caliber, it's important to ensure all components are properly balanced and clearanced according to the manufacturer's specifications. This assembly is intended for competition use and is not CARB approved, meaning it cannot be shipped to California. Always refer to Eagle's detailed installation instructions for proper assembly and break-in procedures to get the most out of this high-performance rotating assembly.