Forged 4340 steel H-Beam connecting rods are forged from a two-piece forging and feature a fully machined and shot-peened surface. Sizing is held to exact tolerances. Sold as a weight-matched set. Equipped with ARP 2000 bolts for even more power-handling capability. Recommended for competition use.. Eagle 06-09 Mazdaspeed 3/6 MZR 22.5mm Pin H-Beam Connecting Rods (packaged in weight matched sets). Forged 4340 Steel H-Beam Rods - MAZDA MZR 2.3L DI TURBO.. 4340 Rod MAZDA MZR 2.3 .886 PISTON PIN 4. Torque to 43 ft-lbs, ARP moly lube ONLY.. Engine Connecting Rod. MAZDA MZR 2.3. ESP 4340 Rod. 4340 Rod

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