Eagle B11420L060 Competition Rotating Assembly Kit - 408 CID 8-Cylinder

The Eagle B11420L060 Competition Rotating Assembly is engineered for high-performance and racing applications that demand maximum strength and reliability. This complete rotating assembly kit provides all the critical internal engine components needed for a professional-quality engine build.

Complete Assembly Includes:

• Forged 4340 steel crankshaft with 4.000-inch stroke
• Eagle H-Beam connecting rods with 6.125-inch or 6.135-inch length
• Premium forged pistons (Icon, Arias, or Mahle brand)
• High-performance piston rings
• Clevite or King performance bearings
• Factory balanced for direct installation

Key Features:

• Pre-balanced assembly ("B" prefix) requires no additional balancing
• Forged 4340 chromoly steel construction for maximum durability
• H-Beam rods feature ARP 8740 or ARP 2000 bolts
• ESP Armor surface finishing on crankshaft for superior oil flow
• Suitable for racing engines including nitrous and forced induction applications
• Designed for builds up to 850+ horsepower

This balanced rotating assembly features a 4.000-inch stroke forged 4340 crankshaft and 6.135-inch H-Beam connecting rods with ARP bolts, paired with forged closed chamber pistons. Eagle specializes in crankshafts and connecting rods with smoother surfaces than competitor products, allowing better oil flow for improved lubrication and reduced wear.