Description
The GSC Power-Division Billet S1 Camshaft Set for Toyota/BMW B58 is a high-performance valvetrain upgrade engineered for the BMW B58B30C Double VANOS and Valvetronic engine platform. Designed for use in the 2018–2024 Toyota GR Supra MKV and BMW G-series vehicles equipped with the B58 engine, this camshaft set is built to deliver improved airflow, sharper throttle response, and stronger mid-range power delivery across a wide performance range.
Developed by GSC Power-Division, the S1 camshaft set is specifically designed for performance builds targeting 500–900 wheel horsepower applications. It enhances engine breathing efficiency while maintaining drivability for street and performance use.
Manufactured from forged billet construction, the GSC S1 camshafts offer exceptional strength, durability, and consistency under high-load and high-boost conditions. The design supports a rev range of 3000–7000 RPM, optimizing mid-range torque and improving throttle response throughout the powerband.
The intake cam includes an integrated trigger design for precise engine control compatibility, while both intake and exhaust profiles are optimized for modern BMW variable valve timing and lift systems.
A valve spring upgrade is recommended when running higher-than-stock boost levels to ensure valvetrain stability and reliability.
Fitment compatibility is based on OEM exhaust camshaft part number 11318631648, ensuring correct pairing with supported B58 applications.
Fitment
- Toyota GR Supra (MKV Supra 2018–2024)
- BMW G-series B58 vehicles
- Compatible with BMW B58B30C Double VANOS / Valvetronic engines
- Requires OEM exhaust camshaft part number 11318631648 compatibility
- Designed for high-performance street and built engine applications
Features
- Billet S1 camshaft set by GSC Power-Division
- Optimized for 500–900 WHP performance builds
- Designed for 3000–7000 RPM operating range
- Improved mid-range torque and throttle response
- Forged billet construction for maximum strength
- Integrated intake cam trigger design
- Compatible with BMW Valvetronic and Double VANOS systems
- Valve spring upgrade recommended for high-boost setups
- Precision-engineered cam profiles for modern B58 engines
- Improved airflow and engine efficiency across RPM range
Camshaft Specifications (S1 Profile)
- Intake duration: 272°
- Intake duration @ 0.040": 232°
- Intake peak lift: 10.2 mm
- Intake center line: Variable
- Exhaust duration: 272°
- Exhaust duration @ 0.040": 234°
- Exhaust peak lift: 10.4 mm
- Exhaust center line: Variable
