Skunk2 BMW B58 Alpha Series Connecting Rods

The Skunk2 Alpha Series Connecting Rods are high-performance engine internals engineered for the BMW B58 engine family — the same 3.0 L turbocharged inline-6 found in modern Toyota GR Supra models. Designed for enthusiasts building stronger engines with higher power levels, these rods deliver outstanding strength, durability, and precision balance.

Skunk2 has a long heritage in performance parts engineering, and the Alpha Series rods reflect decades of development in strengthening engine internals. With thoughtful design, stress-relieved materials, and precision manufacturing, these connecting rods are ideal for enthusiasts looking to build a stronger bottom end capable of supporting elevated power levels.

Key Features

• H-Beam Construction: Precision CNC-machined from high-strength aircraft-grade 4340 alloy steel forgings for exceptional strength-to-weight performance.

• Heat Treated & Shot Peened: Each rod undergoes heat treating and shot peen stress relief to increase fatigue resistance and longevity under high RPM and power conditions. 

• Bronze Wrist Pin Bushings: Factory installed bronze bushings improve wear characteristics and help ensure smooth piston pin movement.

• Forced Pin Oiling: Optimized lubrication design to support enhanced durability in performance applications.

• High-Strength Fasteners: Includes precision ARP2000 rod bolts rated over 220,000 psi to maintain clamping integrity under load.

• Precision Balanced: Rods are matched to within +/- 1 gram for smooth operation and reduced vibration in high-revving builds.

Specifications

• Set Quantity: 6 connecting rods (complete set)

• Approx. Weight: 688g per rod

• Center-to-Center Length: 140.80mm

• Big End Dimensions: 53.60mm bore × 23.88mm width

• Small End Dimensions: 22.00mm bore × 20.90mm width

Compatibility

• 2020+ GR Supra w/B58 3.0L
• BMW Z4 (G29)