Carrillo SC7124X-4 Pro-H Connecting Rod Set with CARR Bolt

Designed for demanding racing and high-horsepower street applications, these rods are built to survive extreme cylinder pressures and high-RPM operation.

Key Features:

• Proprietary Carrilloy Steel: Machined from CP-Carrillo's exclusive chrome, nickel, moly, vanadium alloy steel (4330M), vacuum arc re-melted (VAR) and independently validated for consistent chemical and physical properties
• CARR Bolt Fasteners: Equipped with the upgraded CARR-S7 (MP35N) rod bolt featuring a UTS of 285,000 psi and a patented asymmetrical thread design for maximum clamp load and fatigue life
• Pro-H Beam Design: Forged from oversized proprietary steel forgings to ensure proper grain flow and elimination of surface inclusions, delivering an exceptional strength-to-weight ratio
• Precision Machining: All critical dimensions are CNC-machined and probed for dimensional accuracy; each rod is magnafluxed twice and Rockwell tested to verify heat treatment
• 200% Shot-Peen Finish: Final shot-peen operation improves fatigue resistance across the entire rod surface
• Made in the USA: Manufactured at CP-Carrillo's Southern California facility

The CARR bolt configuration makes these rods an ideal choice for high-revving and forced-induction builds where fastener integrity is critical. Each set includes specific assembly lubricant and a detailed spec sheet. Bolt installation should follow CP-Carrillo's recommended stretch method for proper preload.