GSC Beehive Valve Spring Kit w/ Titanium Retainers – Subaru EJ Turbo (GSC5043)
Optimized Valvetrain Control for EJ Turbo Engines
The GSC Power-Division Beehive Valve Spring Kit is designed for DOHC Subaru EJ Turbo platforms. This complete kit includes 16 beehive valve springs and 16 lightweight titanium retainers, engineered to deliver enhanced valve control and support higher RPM operation.
Beehive Design for Performance and Longevity
Made with ovate wire and advanced heat treatment, these springs offer exceptional load retention and fatigue resistance. The beehive shape allows for the use of smaller, lighter retainers—reducing valvetrain mass and improving stability at elevated RPMs.
Technical Specifications
| Setup | Coil Bind (in) | Install Height (in) | Seat Pressure (lbs) | Open Pressure @ 11.5mm Lift | Max Valve Lift (in) |
|---|---|---|---|---|---|
| Beehive | 0.825 | 1.363 | 81 | 230 @ 0.910" | 0.478 |
Performance Limits
- Max RPM: 8,500 RPM
- Max Boost: 35 psi
Fitment Guide
- 2002–2005 Subaru WRX 2.0L Turbo DOHC (EJ205)
- 2004–2007 Subaru WRX STI 2.5L Turbo DOHC (EJ257)
- 2006–2014 Subaru WRX 2.5L Turbo DOHC (EJ255)
- 2008–2021 Subaru WRX STI 2.5L Turbo DOHC (EJ257)
- 2004–2006 Subaru Baja Turbo 2.5L DOHC (EJ255)
- 2005–2009 Subaru Legacy GT 2.5L Turbo DOHC (EJ255)
- 2005–2009 Subaru Outback XT 2.5L Turbo DOHC (EJ255)
- 1994–1998 Subaru Legacy Turbo 2.2L DOHC (EJ22T)
- 1992–1996 Subaru Impreza WRX 2.0L Turbo DOHC (EJ20G)
- 1996–2000 Subaru Impreza WRX STI 2.0L Turbo DOHC (EJ20K)
- 2001–2005 Subaru Impreza WRX STI JDM 2.0L Turbo DOHC (EJ207)
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