Carrillo SCR4854-4 Pro-SA Connecting Rods Mazda 1.6/1.8 B6 BP 5/16 WMC Bolt

Featuring a 5/16 WMC (World's Most Copied) rod bolt, these rods are designed for high-performance and racing applications where strength, precision, and reliability are essential.

Key Specifications:

• Rod Length: 5.234 inches
• Wrist Pin: 20mm, bushed full-floating design
• Rod Bolt: 5/16 WMC (World's Most Copied) fastener
• Advertised Weight: 431g per rod
• Beam Style: Pro-SA

Construction & Quality:

• Forged from Carrilloy — CP-Carrillo's proprietary chrome, nickel, moly, vanadium alloy steel (4330M VAR)
• Manufactured from oversized forgings to ensure proper grain flow and eliminate surface inclusions
• Each rod undergoes magnaflux inspection twice during production for surface flaw detection
• Rockwell hardness tested to validate heat treatment on every individual rod
• Shot-peened finish to relieve tensile stress and maximize fatigue life
• CNC-machined with probing validation for dimensional accuracy and consistent tolerances
• Laser-engraved job number on every rod for full traceability

CP-Carrillo connecting rods are manufactured in the USA and trusted by professional engine builders across drag racing, road racing, and high-performance street applications. The SCR4854-4 delivers OEM-style fitment with a dramatic increase in strength and durability over stock rods.