Toyota 3.0L Supra 2JZ H-Beam Connecting Rods are crafted from 4340 high tensile steel, ensuring high performance and exceptional durability. The ribbed pin end minimizes distortion under heavy inertial loads while reducing excess weight. The bushings, made from AMPCO 18 material, offer excellent wear and fatigue resistance, featuring a radial groove that acts as an oil reservoir. Each rod undergoes shot peening to relieve material stress and multi-stage heat treatment to enhance rigidity. Tight production tolerances guarantee a perfect fit and optimized oil clearances, with controlled bend and twist. Each rod includes ARP 2000 cap fasteners rated at 220,000 psi, with an optional upgrade to ARP L19 material rated at 260,000 psi. The complete kit is supplied with ARP moly and full fitting instructions.

Additional Machining Processes

• Dowel sleeves for perfect fit and accurate re-assembling
• Lipped Cap Relief for improved big-end integrity at extreme applications
• Grooves in Thrust Face for weight reduction

Technical Features of ZRP Connecting Rods

• Two-piece forging for enhanced strength
• Shot peening for improved fatigue life
• Magnaflux inspection ensures consistency of the forged material
• Double ribbed caps for added support
• Multi-stage heat treatment for maximum strength, dimensional stability, and fatigue life
• CNC machining for superior tolerances, precise to 0.0002″
• Center-to-center maintained under 0.001″ tolerance
• Finite Element Analysis (FEA) for computer-generated stress analysis of connecting rods
• Optimal balancing for weight-matched sets within ± 1 gram