Skunk2 GR Supra B58 Ultra Series Stage 1 Camshafts
SPECIAL ORDER ITEM
- Estimated arrival will be incorrect at checkout.
- This item is not ready to ship.
- May ship with signature confirmation.
Special order items are final sale.
Once an order is placed it cannot be cancelled or returned.
This product has a longer lead time than most. Lead times may vary on products with multiple options.
To check availability, please direct all inquires to support@limitplus1.com
Overview
The Skunk2 Ultra Series Stage 1 Camshafts are a high-performance camshaft upgrade engineered for the BMW B58 3.0L turbocharged inline-6 engine, as found in the Toyota GR Supra (A90/MK5) and BMW Z4 (G29). Designed to increase airflow efficiency and broaden the usable powerband, these camshafts deliver substantial gains while retaining factory drivability systems.
Skunk2’s Ultra Series camshafts are developed using advanced valvetrain dynamics modeling and motorsports experience. The result is a camshaft set that balances aggressive performance with OEM-level refinement, making it a strong choice for enthusiasts building a higher-output GR Supra while retaining factory systems.
These Stage 1 camshafts are ideal for street, track, and high-boost performance builds seeking meaningful power gains without sacrificing daily drivability. When properly tuned, they can significantly improve engine efficiency and unlock additional horsepower and torque potential beyond stock cam limitations.
Features
-
Billet Alloy Steel Construction: Manufactured from high-strength 8660 billet steel blanks, rifle drilled, induction hardened, and precision CNC ground for exceptional durability and consistency under high load and high RPM conditions.
-
Ultra Series Lobe Profiles: Optimized cam profiles increase valve lift and duration to improve airflow, efficiency, and power production throughout the mid- to upper-RPM range.
-
Retains OEM Systems: Fully compatible with factory Double VANOS and Valvetronic, maintaining smooth idle quality and street-friendly drivability when properly tuned.
-
Expanded Powerband: Designed to deliver stronger and more consistent power from approximately 3,500 RPM to redline, rather than shifting power only to peak RPM.
-
Boost-Friendly Design: Well-suited for B58 builds, with documented efficiency gains under higher boost levels when paired with proper supporting modifications.
Specifications
-
Intake Valve Lift: Approx. 0.410in (10.41mm)
-
Exhaust Valve Lift: Approx. 0.425in (10.79mm)
-
Duration @ 0.050in:
-
Intake: 227°
-
Exhaust: 245°
-
-
Duration @ 0.039in:
-
Intake: 234°
-
Exhaust: 252°
-
-
Advertised Duration (@ 0.004in):
-
Intake: 277°
-
Exhaust: 295°
-
Compatibility
- 2020+ GR Supra w/B58 3.0L
- BMW Z4 (G29)
**Note: ECU tuning is strongly recommended. Upgraded valve springs and retainers are advised for long-term reliability with increased lift and RPM. Actual results will vary based on engine condition, other parts selection, and tuning abilities.**
**Not CARB Legal**
