Eagle 86251855 Competition Rotating Assembly Mitsubishi - 4G63 1998-Up

The Eagle 86251855 Competition Rotating Assembly is engineered for high-performance Mitsubishi 4G63 engines in 1998 and newer applications. This assembly is perfect for all forms of racing use including nitrous and forced-induction, making it ideal for turbocharged builds, drag racing, and rally competition.

Complete Assembly Includes:

• 3.465" forged 4340 steel crankshaft for maximum strength and durability
• 5.900" H-beam connecting rods with 3/8" ARP 2000 bolts
• Forged 2618 aluminum Mahle pistons, 85.5mm bore with -10cc inverted dome design
• Plasma-moly file-fit piston rings for precise installation
• King XP series rod and main bearings for enhanced load capacity

This Competition-level rotating assembly features premium components designed to handle extreme boost levels and high-RPM operation. The forged 4340 crankshaft provides superior strength over cast units, while the H-beam connecting rods with ARP 2000 bolts deliver the structural integrity needed for high-horsepower applications. The 2618 aluminum forged pistons are specifically designed for forced induction applications, offering excellent thermal stability and strength.

Application: Mitsubishi 4G63 engines (1998 and newer) including Lancer Evolution models, Eclipse GS-T/GSX, and other seven-bolt 4G63 variants. Professional balancing and proper machine work recommended before installation.