Eagle Mitsubishi 4G63 98 Up 3.937in Crank 5.900in H-Beam -19cc 86mm Pistons Rotating Assembly

This Eagle rotating assembly gives you the core components needed to rebuild or upgrade the heart of your Mitsubishi 4G63 engine, specifically for 1998 and newer applications. You'll receive a forged 4340 crankshaft with a 3.937-inch stroke, a set of 5.900-inch H-beam connecting rods fitted with 3/8-inch ARP 2000 bolts, and 86mm forged 4032 Mahle pistons featuring an inverted dome design with a -19cc volume. This package also includes plasma-moly file-fit piston rings and King XP rod and main bearings, providing a well-built foundation for serious engine work.

The forged 4340 steel crankshaft is a strong choice for demanding builds, offering improved durability over cast cranks. The H-beam connecting rods are known for their robust design, capable of handling significant stress, especially when paired with the included ARP 2000 bolts, which offer excellent clamping force. Mahle pistons are a popular choice for performance applications, and the 4032 alloy offers a good balance of strength and thermal expansion characteristics. The -19cc inverted dome piston design is intended to work with specific cylinder head combustion chamber volumes to achieve a desired compression ratio, often for forced induction or high-performance naturally aspirated setups. The plasma-moly file-fit rings allow for precise gapping to match your engine's bore and intended use, ensuring good sealing. King XP bearings are well-regarded for their performance and durability in high-stress environments.

This assembly is designed for racing use, including applications with nitrous oxide or forced induction. Please note that this assembly is not CARB approved and cannot be shipped to California. It's always recommended to consult with your engine builder or refer to Eagle's specific installation guidelines for proper assembly and tuning procedures to maximize the performance and longevity of these components.