Carrillo SCR8593-1 Pro-H Beam Forged Steel Connecting Rod

The Carrillo SCR8593-1 is a Pro-H Beam forged steel connecting rod engineered for high-horsepower and racing engine applications. Part of CP-Carrillo's renowned Pro-H series, this connecting rod delivers the precision, strength, and reliability that has made Carrillo the benchmark in performance connecting rod manufacturing since 1963.

CP-Carrillo connecting rods are manufactured from a proprietary steel alloy known as Carrilloy — a chrome, nickel, moly, vanadium alloy that meets all VAR (vacuum arc re-melt) ASTM standards. Every rod begins as an oversized forging to ensure proper grain flow and the complete removal of any surface inclusions generated during the forging process.

Key Features:

• Pro-H straight H-beam configuration — the stoutest design available for severe, high-horsepower applications
• Manufactured from proprietary Carrilloy steel: chrome, nickel, moly, vanadium alloy meeting all VAR ASTM standards
• Fully CNC-machined from oversized forgings for optimal grain flow and surface integrity
• Each rod is magnafluxed a minimum of twice during production to detect surface flaws
• Rockwell hardness tested on every rod to validate heat treatment
• Final shot peen operation relieves tensile stress and maximizes fatigue life
• Set balanced to +/- 1 gram per end for optimal rotating assembly balance
• Laser etched job number for full production traceability
• Manufactured in the USA at CP-Carrillo's facility in Irvine, California

CP-Carrillo offers two fastener options across their Pro-H lineup: H11 tool steel (WMC) bolts with a 220,000 UTS rated for approximately 15–18 torque cycles, and CARR Multiphase bolts with a 285,000 UTS rated for indefinite re-torquing when the stretch method is followed. Confirm bolt type included with this specific part number at time of purchase.

The Carrillo SCR8593-1 connecting rod is built for builders and racers who demand uncompromising quality in their engine internals. Every CP-Carrillo rod undergoes a multi-step quality inspection process to ensure dimensional accuracy and long-term durability under extreme load conditions.