Eagle 138153898 Competition Rotating Assembly LS 3.900" Stroke 6.125" H-Beam Rods

The Eagle 138153898 Competition Rotating Assembly is a complete high-performance engine rebuild kit designed for LS1 engines with 3.898" standard bore and 24-tooth reluctor applications. This premium assembly is engineered for demanding racing and high-performance street applications.

Complete Kit Includes:

• Forged 4340 steel crankshaft with 3.900" stroke
• 6.125" forged H-beam connecting rods with 2.1" rod journals
• 7/16" ARP 8740 performance rod bolts
• Forged 4032 DSS pistons with -5cc flat top design
• Premium piston rings
• Rod and main bearings
• 24-tooth reluctor wheel for ignition timing

Key Features:

• Forged 4340 steel construction provides maximum strength and durability for high-stress applications
• Competition-grade H-beam rods offer excellent strength-to-weight ratio
• ARP 8740 bolts ensure reliable fastening under extreme loads
• Precision-balanced components for smooth operation
• Ideal for engines producing over 500 horsepower

Eagle Specialty Products is known for manufacturing high-strength connecting rods and crankshafts specifically for racing engines. This Competition series assembly represents their premium tier, featuring forged components throughout for ultimate reliability in demanding applications including supercharged, turbocharged, and nitrous-injected engines.