Carrillo BF9871-STD Performance Connecting Rod Standard Size

The Carrillo BF9871-STD is a high-performance connecting rod manufactured by CP-Carrillo, the industry leader in precision-forged connecting rods for racing and high-performance engine applications. Built to exacting tolerances, this rod is part of Carrillo's extensive lineup of application-specific connecting rods engineered for strength, durability, and reduced reciprocating mass.

Key Features:

• Proprietary Carrilloy Steel: Manufactured from CP-Carrillo's exclusive chrome, nickel, moly, vanadium alloy that meets all VAR (vacuum arc re-melt) ASTM standards for superior metallurgical integrity
• USA Made: Each rod is machined in the USA from oversized proprietary steel forgings to ensure proper grain flow and elimination of surface inclusions
• Precision Heat Treatment: Mar-aged heat treat operation delivers a UTS of 195,000 psi and yield of 182,000 psi while maintaining low notch-sensitivity and ductility
• Double Magnaflux Inspected: Every rod is magnafluxed at least twice and Rockwell tested to validate heat treatment
• 200% Shot-Peen Finished: Final shot-peen operation enhances fatigue resistance and surface integrity
• High-Strength Rod Bolts: Compatible with Carrillo's WMC (H11 tool steel, 220,000 UTS) and CARR (MP35N, 285,000 UTS) fastener systems featuring patented asymmetrical thread design for optimized clamp load
• Standard Size (-STD): Manufactured to standard bore dimensions for direct fitment
• CNC Machined: All critical dimensions validated using CNC probing equipment to ensure dimensional integrity

CP-Carrillo connecting rods are trusted by professional engine builders across drag racing, road racing, off-road, and high-performance street applications. The BF9871-STD is sold as a single connecting rod. Always install per CP-Carrillo's recommended fastener stretch specifications for optimal preload and fastener longevity.