Carrillo RS1MGNHD-4100 High-Performance Forged Connecting Rod

The Carrillo RS1MGNHD-4100 is a high-performance forged connecting rod engineered by CP-Carrillo, one of the most trusted names in precision engine components since 1963. Built for demanding racing and high-performance street applications, this connecting rod is manufactured using CP-Carrillo's proprietary Carrilloy steel — a chrome, nickel, moly, vanadium alloy that meets all VAR (vacuum arc re-melt) ASTM standards for exceptional strength and durability.

CP-Carrillo connecting rods are fully machined from oversized forgings to ensure proper grain flow and the complete removal of any surface inclusions. Each rod undergoes a rigorous multi-step quality control process, including double magnaflux inspection, Rockwell hardness testing to validate heat treatment, and a final controlled shot peen operation to maximize fatigue resistance. A job number is laser-etched on every rod for full traceability.

Key Features:

• Manufactured from proprietary Carrilloy 4330m chromoly steel — a chrome, nickel, moly, vanadium VAR alloy
• Forged from oversized stock for proper grain flow and surface integrity
• Double magnaflux inspected and Rockwell hardness tested at the factory
• Shot peened to relieve tensile stress and maximize fatigue life
• Compatible with CP-Carrillo WMC (H11 tool steel, 220 KSI) or CARR (Multiphase MP35N, 285 KSI) rod bolt systems
• Supplied with a specification card detailing critical dimensions, weight, job number, and bolt installation chart
• Laser-etched job number for full manufacturing traceability
• Made in the USA at CP-Carrillo's Irvine, California facility

CP-Carrillo connecting rods are the choice of professional engine builders across motorsports disciplines worldwide. Every rod ships with assembly lubricant and a detailed spec card to support precise installation using the recommended bolt-stretch method for optimal clamping load.