Building your Toyota Supra A90 or BMW B58 engine for the racetrack or high performance? Then you need connecting rods you can rely on 100 %. The Arlows 6x Steel Connecting Rod Set 148mm B58 (H-Beam) made of high-quality 4340 steel (40CrNiMoA) is exactly the part trusted by professionals in motorsport, tuning and custom builds.

The optimized H-beam design delivers maximum stability at minimum weight. Forged, 3D-designed, CNC-machined, hardened and shot-peened ? perfect for high-revving engines. With bronze piston pin bushings, ultra-strong Pro-Series 14.9 bolts and extremely tight tolerances, you?re perfectly equipped for power levels far beyond stock.

- Fits Toyota Supra A90 and BMW 340i / Z4 (B58 3.0 Turbo)

- Forged from 4340 steel (40CrNiMoA) and CNC-machined

- H-beam for maximum stability at minimum weight

- 3D-designed & CNC-machined for optimal load distribution

- Hardened to HRC 35-38 + shot-peened

- Bronze piston pin bushings with lubrication hole

- High-strength Pro-Series 14.9 bolts (1490 N/mm² tensile strength)

- Rolled threads ? 30 % stronger flank strength

- Tight tolerances (±0.004 mm) and weight-matched (±1 g)

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