Eagle 12104060 Competition Rotating Assembly Kit Chevy SBC 355 .060 Overbore

The Eagle Specialty Products 12104060 is a Competition Rotating Assembly designed for the Chevrolet Small Block engine at a .060" overbore, displacing approximately 355 cubic inches. This complete bottom-end kit delivers the strength and reliability needed for high-performance, competition-level engine builds.

Key Features:

• Competition-grade forged 4340 steel crankshaft for maximum strength and durability
• 4340 steel H-Beam connecting rods built to handle extreme loads
• Forged pistons suited for high-performance competition use
• Plasma-moly file-fit piston rings for optimal ring seal
• King or Clevite rod and main bearings included
• All components are test-fitted in-house by Eagle to ensure proper fitment and compatibility
• Designed for competition engines running boost, exotic fuels, or nitrous oxide
• Available balanced or unbalanced — part numbers beginning with "B" are pre-balanced by Eagle and require no additional machine shop balancing

Eagle rotating assemblies take the guesswork out of selecting bottom-end components by pairing a matched crankshaft, connecting rods, pistons, rings, and bearings into one complete kit. Eagle Specialty Products has been producing high-strength engine components since 1992 and is a trusted name in performance and racing engine builds.