GSC Power Division Conical Spring Set
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GSC Power Division Conical Spring Set - Subaru WRX/STI (GDA/GGA/GDB) - Titanium
GSC Power Division builds its valvetrain componentry for engines that are pushed well past factory limits, and this conical spring set is no exception. Designed for the Subaru WRX and WRX STI turbo EJ platforms, it pairs a true conical spring design with titanium retainers and chromoly seats to keep the valvetrain stable under high RPM and high boost conditions.
This listing covers the Subaru WRX (GDA/GGA) and Subaru WRX STI (GDB) turbo EJ platforms. SKU: GSC5076.
Kit Contents
- 16 x titanium valve spring retainers
- 16 x conical valve springs
- 16 x chromoly valve spring seats
Key Features
- True conical spring geometry with varying coil diameter and spacing for natural harmonic damping
- Reduces valvetrain harmonics compared to traditional cylindrical or beehive spring designs
- Super-finished surface treatment for reduced friction and wear
- Patented multi-step heat treatment process for long term durability
- Supports higher RPM ceilings, more aggressive cam profiles, and increased boost levels
- Lightweight titanium retainers reduce reciprocating valvetrain mass
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please ensure your engine configuration and camshaft specification are confirmed before ordering.
Not sure if this kit suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
| Make | Model | Chassis | Engine |
|---|---|---|---|
| Subaru | WRX | GDA | EJ205 |
| Subaru | WRX | GGA | EJ205 |
| Subaru | WRX STI | GDB | EJ257 |
Technical Specifications
| Spec | Value |
|---|---|
| Spring Type | Conical valve spring |
| Retainer Material | Titanium |
| Valve Spring Seat Material | Chromoly |
| Retainers Included | 16 |
| Conical Valve Springs Included | 16 |
| Valve Spring Seats Included | 16 |
| Surface Treatment | Super-finished surface treatment |
| Heat Treatment Process | Patented multi-step heat treatment |
No instructions available for this product.
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