GSC Power-Division Billet S1 Camshafts
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GSC Power-Division Billet S1 Camshafts - Subaru EJ255/EJ257 Intake AVCS (WRX 2.5L 2006-2007 / STI 2004-2007) - 268/266
GSC Power-Division billet S1 camshafts for the US-specification EJ255/EJ257 STI and WRX with Intake only AVCS. These will not drop any low end power, and will create more power and torque across the entire RPM range. Good for stock frame upgraded turbos or up to 500 WHP upgrades. Upgraded valve springs are required; beehive valve springs are recommended, but not required.
- Check Pictures for cam placement. Long nose = Left Side, short nose = Right Side
- Due to the lobe size, head castings may need to be filed down slightly for clearance - Please check during install
- Proper break in and running high zinc oil is a must on flat tappet engines
- Must be installed by an experienced technician
This listing covers the GSC Power-Division Billet S1 Camshafts for the Subaru EJ255/EJ257 Intake AVCS (WRX 2.5L 2006-2007 / STI 2004-2007). It is available as: Complete Set, Left Exhaust Cam Only, Left Intake Cam Only, Right Exhaust Cam Only, Right Intake Cam Only.
Note: Check the valve spring, retainer and valve-to-piston clearance requirements for this grind. Camshafts should be installed and degreed by a qualified engine builder.
Specifications
- Engine: Subaru EJ255/EJ257 Intake AVCS (WRX 2.5L 2006-2007 / STI 2004-2007)
- Material: Billet
- Duration (intake/exhaust): 268° / 266°
- Part numbers: GSC7025S1, GSC7025S1LEX, GSC7025S1LIN, GSC7025S1REX, GSC7025S1RIN
Need help confirming the right part for your engine? Contact our team at sales@chicaneaustralia.com.au.
Product
- Part numbers
- GSC7025S1, GSC7025S1LEX, GSC7025S1LIN, GSC7025S1REX, GSC7025S1RIN
Details
- Engine
- Subaru EJ255/EJ257 Intake AVCS (WRX 2.5L 2006-2007 / STI 2004-2007)
- Material
- Billet
- Duration (intake/exhaust)
- 268° / 266°
No instructions available for this product.
Vehicle fitment
Universal fit: this part suits any car. Check the specifications above for sizes and fittings.
| Make | Model | Chassis | Years | Versions | Engine | Brakes | Position |
|---|
Can’t see your car? Ask us and we’ll check fitment for you.

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