Description
ARLOWS BMW 340I / Z4 6X STEEL CONNECTING ROD SET 148MM B58 (H-BEAM)
Light. Extremely strong. Precision engineered.
Your upgrade for maximum engine performance.
Building your BMW 340i, Z4 or Toyota Supra 3.0 24V Turbo 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.
Your advantages at a glance:
- Fits BMW 340i / Z4 and Toyota Supra 3.0 24V Turbo (B58B30 / B58C30)
- 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)
Technical Specifications
| Parameter | Value | ||
|---|---|---|---|
| Fits | BMW 340i / Z4 and Toyota Supra 3.0 24V Turbo (B58B30 / B58C30) | ||
| Length | 148 mm | ||
| Piston pin bore | 22 mm | ||
| Crank pin bore | 53.6 mm | ||
| Material | 4340 Steel (40CrNiMoA) | ||
| Tensile strength | > 1250 N/mm² | ||
| Max. RPM | up to 9,000 rpm | ||
| Load capacity | approx. 200
|