Eagle 129524065 Competition Rotating Assembly Stroker Kit - LS3 428ci

The Eagle 129524065 is a high-performance Competition rotating assembly designed for Chevrolet LS3 376ci engines, stroking them out to 428 cubic inches. Eagle Competition rotating assemblies are engineered to support engine builds up to 900 horsepower, making this an ideal choice for serious street and racing applications.

Complete Kit Includes:

• 4.125" stroke forged 4340 steel crankshaft with 58-tooth reluctor
• 6.125" forged 4340 steel H-beam connecting rods
• 7/16" ARP 8740 rod bolts for maximum strength
• Forged 4032 Mahle flat top pistons with -8cc volume, 4.065" bore
• Plasma-moly file-fit piston rings
• King XP performance rod and main bearings

This premium kit combines Eagle's forged 4340 steel crankshaft and H-beam rods with Mahle premium forged pistons, Hastings rings, and high-performance King bearings to deliver exceptional strength and reliability. The forged internals provide the durability needed for high-boost forced induction applications, heavy nitrous use, or high-RPM naturally aspirated builds.

Application Note: This assembly is designed for LS3, L92, L99, and LS9 engines with the 58-tooth reluctor wheel. Verify your engine's reluctor tooth count and cylinder head volume before ordering to ensure proper compression ratio and ignition timing compatibility.