Carrillo SCR5519 Pro-A Beam 3/8 WMC Forged Connecting Rod Single

The Carrillo SCR5519 is a single Pro-A Beam forged connecting rod featuring a 3/8" WMC bolt, designed for high-performance and competition engine builds. Machined from Carrillo's proprietary 4330M chromoly steel forging, this rod delivers exceptional strength, durability, and precision for demanding motorsport applications.

Key Features:

• Beam Style: Pro-A Beam design for optimized strength-to-weight performance
• Rod Material: 4330M forged chromoly steel
• Rod Length: 5.428" / 138mm (Standard Length)
• Pin Size: 0.866" / 22mm
• Gram Weight: 532g
• Rod Bolt: 3/8" WMC (H11 Tool Steel) rated at 220,000 PSI ultimate tensile strength
• Bolt Threads: Asymmetrical thread design for evenly distributed thread engagement, increased clamp load, and improved fatigue life
• Balancing: Set balanced to ±1 gram
• 100% Magnaflux inspected for quality assurance
• Laser edged and fully machined
• Proudly made in the USA

This listing is for a single connecting rod (sold individually). Each rod ships with Carrillo's proprietary assembly lubricant and torque specifications. The WMC bolt is rated for approximately 15–18 torque cycles and can be reused during engine rebuilds provided the engine has not been over-revved. Old/interchange part number: TO-3SG-1-A-65433H-04.