Carrillo SCR6845-4 Pro-H Straight H-Beam Connecting Rod

Built in the USA from Carrillo's proprietary Carrilloy steel — a chrome, nickel, molybdenum, and vanadium alloy manufactured to vacuum arc re-melt (VAR) ASTM standards — these rods deliver an exceptional strength-to-weight ratio and outstanding fatigue resistance under extreme engine loads.

Key Features:

• Pro-H Straight H-Beam Design: The stoutest H-beam configuration available, optimized for severe high-horsepower and high-RPM applications
• Proprietary Carrilloy Steel: Custom chrome/nickel/moly/vanadium forged alloy meeting VAR ASTM standards, validated by both the supplier and an independent metallurgist
• Precision CNC Machined: All critical machining operations use probing to validate dimensional integrity throughout the manufacturing process
• Dual Magnaflux Inspection: Each rod undergoes magnetic particle (Magnaflux) testing at least twice to identify any surface flaws
• Rockwell Hardness Tested: Every rod is Rockwell tested to validate the heat treat procedure
• 200% Shot-Peen Finished: A final controlled shot-peen operation relieves tensile stress and imparts beneficial compressive stress to maximize fatigue life
• Laser Engraved Traceability: Each rod receives a laser-engraved job number for full manufacturing traceability
• Set Balanced: Rods are matched and balanced as a complete set to ±1 gram
• Made in the USA

These rods are the choice of professional race teams and engine builders worldwide competing in drag racing, road racing, endurance, and off-road motorsports.