Eagle 129384005 LS Competition Rotating Assembly Stroker Kit - 408ci

The Eagle 129384005 Competition Rotating Assembly is engineered for serious LS engine builders seeking ultimate performance and reliability in a 408 cubic inch stroker configuration. This complete kit is designed for Chevrolet LS engines and provides everything needed for a professional-grade internal engine build.

High-Performance Components:

• Eagle 4340 forged steel crankshaft with 4.000-inch stroke for exceptional strength and durability
• Eagle H-Beam forged connecting rods with 6.125-inch center-to-center length
• Premium Mahle or Arias forged pistons designed for high-performance applications
• Hastings file-fit piston rings for optimal sealing and compression
• High-performance Clevite or King bearings for main and rod journals

Engine Application and Performance:

• Designed for LS2, LQ4, LQ9, LY6, and L76 engines with 4.030-inch bore
• Produces 408 cubic inches of displacement with 4.000-inch stroke
• Supports up to 750 horsepower in competition applications
• Designed for internal balance (flexplate and balancer not included)
• Requires professional machine shop balancing before installation

This unbalanced assembly is ideal for racers and performance enthusiasts building high-horsepower LS engines. The forged 4340 steel construction throughout ensures maximum strength and reliability for demanding racing and street/strip applications.