Eagle 138753810 LS Competition Rotating Assembly Stroke H-Beam Rods - 3.900 6.125

The Eagle 138753810 is a high-performance competition rotating assembly designed for demanding LS engine builds requiring maximum strength and reliability. This complete internal engine kit is engineered for serious performance applications including forced induction, nitrous oxide, and high-RPM naturally aspirated builds.

Key Components:

• Forged 4340 steel crankshaft with 3.900" stroke for increased displacement
• 58-tooth reluctor wheel compatible with modern engine management systems
• 6.125" H-beam connecting rods constructed from forged steel
• 7/16" ARP 8740 chromoly rod bolts for superior clamping force
• Forged 4032 aluminum DSS pistons engineered for high-performance applications
• Complete piston rings, wrist pins, and bearing set

Performance Benefits:

• Forged 4340 crankshaft offers exceptional strength for high-horsepower builds
• H-beam rod design provides optimal strength-to-weight ratio
• ARP 8740 fasteners ensure reliable rod cap retention under extreme loads
• Precision-balanced assembly ready for installation
• Designed for engines producing over 500 horsepower

This assembly is ideal for street/strip performance builds, road race applications, and other high-stress engine combinations where component durability is critical. Professional balancing and installation by a qualified machine shop is recommended.