SKU: 7025S2LEX
GSC P-D 2006-2007 2.5L Subaru WRX / 2004-2007 Subaru STi S2 Cams 272 Billet (Left Exhaust Cam Only)
Engineered by GSC Power-Division, this S2 series 272 billet left exhaust camshaft delivers precise valve timing for 2006-2007 2.5L Subaru WRX and 2004-2007 STI models. The 272-degree duration and 10.25mm lift design increase exhaust flow for stronger mid-range torque and top-end power in EJ255 and EJ257 engines. Pair it with matching GSC cams for complete power gains up to 25whp on stock turbo setups.
Key Features
- Billet 8620 Steel Core: Provides maximum strength and resistance to deflection at high RPMs for reliable performance.
- 272° Advertised Duration: Matches intake cam profiles perfectly to optimize volumetric efficiency and power delivery.
- 10.25mm Maximum Lift: Allows greater exhaust valve opening for improved scavenging and reduced backpressure.
- Precision Ground Lobes: Ensures smooth operation with OEM tolerances and extended valve train life.
- Direct Fit Design: Bolts in without modifications to fit USDM WRX and STI cylinder heads.
Product Notes
- Requires minimum valve spring pressures of 85 lbs on exhaust at 1.8mm lift for safe operation.
- Sold as left exhaust cam only. order right side 7025S2REX for full set.
- Special order item. allow extra time for manufacturing if out of stock.
Installation Notes
- Professional installation recommended.
- Replace timing belt and check valve-to-piston clearance during cam swap.
- Compatible with OEM retainers and upgraded GSC valve springs or equivalent.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2006-2007 | Subaru | Impreza | WRX |
| 2004-2007 | Subaru | Impreza | WRX STI |
Why Choose GSC Power-Division?
- Decade-plus expertise in Subaru EJ engine camshaft development with dyno-proven results.
- Manufactured in-house with strict quality controls for consistent performance.
- Backed by real-world testing on track and street applications.
Frequently Asked Questions
-
Q: Will this cam fit my 2005 STI with EJ257 engine?
A: Yes, it fits all 2004-2007 USDM STI models with EJ257 and 2006-2007 WRX EJ255 2.5L engines. -
Q: What material is used for the camshaft?
A: Billet 8620 alloy steel core with nitrided surface for wear resistance and high-RPM durability. -
Q: What is the warranty and installation requirements?
A: GSC offers a 2-year lobe warranty with proper spring pressures and professional install. no core charge required.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Secure custom box 24 x 5 x 5 inches
- Weight: 4.8 lbs
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