Carrillo CUSTOM High-Performance Custom Connecting Rod

Carrillo Custom Connecting Rods are precision-engineered, made-to-order performance connecting rods built to your exact specifications by CP-Carrillo — one of the most trusted names in high-performance internal engine components. Whether you're building a race engine, a high-horsepower street application, or a specialty powersports build, Carrillo's custom rod program delivers a component manufactured specifically for your requirements.

Key Features:

• Proprietary Carrilloy Steel: Each rod is machined from CP-Carrillo's proprietary 4330M chrome-nickel-moly-vanadium alloy forging, which meets all VAR (vacuum arc re-melt) ASTM standards for superior strength and consistency
• Oversized Forgings: All rods are manufactured from oversized proprietary steel forgings to ensure proper grain flow and guaranteed removal of any surface inclusions
• Multi-Stage Quality Inspection: Every rod is Rockwell hardness tested to validate the heat treat procedure and magnafluxed twice using Magnetic Particle Inspection (MPI) to identify any surface flaws, cracks, laps, or seams
• High-Performance Fastener Options: Available with standard WMC-H7 (H11) rod bolts (220,000 psi UTS) or upgraded CARR-S7 (MP35N) multiphase bolts (285,000 psi UTS) for extreme RPM and load applications
• Asymmetrical Thread Design: All bolts feature asymmetrical threads for evenly distributed thread engagement, maximizing clamp load and fastener fatigue life
• Fully CNC Machined: Critical CNC machines are equipped with probing to accurately validate dimensional integrity at every stage of production
• Shot Peen Finished: A final shot peen operation is applied to complete each rod, improving surface fatigue resistance
• Specification Card Included: Every Carrillo rod ships with a detailed specification card listing part number, critical dimensions, weights, and job number for traceability
• Made in the USA: Designed and manufactured at CP-Carrillo's headquarters and production facility in Irvine, California

CP-Carrillo has been providing custom and prototype connecting rods to virtually every major automotive, motorcycle, marine, and powersports racing venue since 1963. A custom Carrillo connecting rod is the choice of professional engine builders who demand a precision component built exactly to spec — no compromises.