GSC Beehive Valve Spring Kit w/ Titanium Retainers – Toyota/BMW B58 – GSC5091
High-RPM Beehive Spring Kit for B58 Engines
The GSC Power-Division Beehive Valve Spring Kit is designed for Toyota and BMW B58 engines. This complete package includes 24 beehive valve springs and 24 titanium retainers (12 intake / 12 exhaust), engineered to deliver reliable performance under high boost and elevated RPM conditions.
Performance Specs
- Install Height: 1.417"
- Seat Pressure: 100 lbs
- Open Pressure: 227 lbs @ 0.984" (11mm lift)
- Coil Bind: 0.900"
- Max Valve Lift: 0.472" (12mm)
- Max RPM: 9,300 RPM
- Max Boost: 70 psi
Why Beehive Springs?
Beehive springs offer superior harmonic control and allow for the use of smaller, lighter retainers—resulting in improved valve stability and higher RPM capability. GSC’s proprietary heat treatment process ensures excellent load retention and fatigue resistance throughout the life of the spring.
Built for Boosted Performance
Whether you're pushing more boost or dialing in aggressive cam profiles, this kit is designed to maintain valvetrain integrity under demanding conditions. Ideal for street builds, track setups, and everything in between.
Fitment:
- 2016–2025 BMW M240i / M340i / M440i / Z4 (B58 3.0L Turbo Inline-6)
- 2020–2025 Toyota GR Supra 3.0L Turbo Inline-6 (B58)
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
