Carrillo SCR4901-4 Pro-H Beam Connecting Rods Honda Acura B-Series

Built to race-proven standards, these rods deliver the strength, reliability, and quality that CP-Carrillo is renowned for in professional and amateur motorsports worldwide.

Key Specifications:

• Beam Design: Pro-H (Straight H-Beam) — Carrillo's strongest and most durable rod design
• Rod Length: 5.394 inches (center-to-center)
• Wrist Pin: 21mm, bushed, full-floating
• Rod Bolt: 3/8" WMC (H-11 Tool Steel, 220,000 UTS)
• Advertised Weight: 510g per rod

Construction & Materials:

• Forged from Carrilloy — a proprietary chrome, nickel, moly, vanadium alloy meeting all VAR (vacuum arc re-melt) ASTM standards
• Heat-treated via mar-aged operation yielding UTS of 195,000 psi with a yield of 182,000 psi
• Manufactured from oversized forgings for proper grain flow and elimination of surface inclusions
• Each rod is magnafluxed at least twice and Rockwell hardness tested during production
• Final shot-peen operation applied to all rods
• All critical CNC operations are probe-validated for dimensional integrity

Includes: 4 matched Pro-H connecting rods, WMC rod bolts, and rod bolt assembly lubricant.

CP-Carrillo connecting rods are made in the USA and are the choice of professional racers across all motorsports disciplines. Each set is supplied with a detailed spec printout and proper torque/stretch values for the rod bolts.