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GSC P-D Subaru EJ255/EJ257 (USDM) w/Intake AVCS S2 Cams 272/272 Billet GSC Power Division GSC7025S2
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GSC P-D Subaru EJ255/EJ257 (USDM) w/Intake AVCS S2 Cams 272/272 Billet

GSC7025S2
GSC7025S2
Camshafts
2 Units In Stock - Ships Next Business Day
$ 1,175.63 $ 999.29
$ 999.29

SKU: 7025S2 | UPC: GSC7025S2

GSC Power-Division 2004-2007 Subaru Impreza WRX STI EJ255/EJ257 USDM w/Intake AVCS S2 Cams 272/272 Billet

GSC Power-Division S2 camshafts fit 2004-2007 USDM Subaru Impreza WRX STI models equipped with EJ255 or EJ257 engines featuring Intake AVCS. These billet cams offer 272-degree duration at 1mm lift and .370-inch (9.4mm) lift on both intake and exhaust for enhanced mid-range torque and top-end horsepower. Ideal for boosted track or street applications seeking reliable power delivery.

Key Features

  • Billet Steel Cores: Provide exceptional strength to handle high-RPM abuse and extended durability in demanding conditions.
  • 272-Degree Duration: Optimized lobe profiles shift powerband for immediate throttle response and strong pull from 4500 RPM upward.
  • .370-Inch Lift: Increases valve opening for improved airflow and cylinder filling boosting peak power by 25+ whp with proper tune.
  • Intake AVCS Compatibility: Retains factory variable valve timing on intake side for smooth low-end drivability and low-speed manners.
  • CNC Precision Ground: Profiles dyno-developed for Subaru EJ25 turbo engines ensuring consistent gains across RPM range.

Product Notes

  • Valve spring upgrade required to match lift and prevent coil bind Supertech dual springs recommended.
  • ECU tune essential after install to adjust for cam timing and fuel ignition maps.
  • Ships in protective tube packaging to prevent damage during transit.

Installation Notes

  • Professional installation recommended.
  • Perform full timing belt service during cam swap using OEM or upgraded belt.
  • Compatible with stock cam trays and bolts no special hardware needed.

This Part Fits

Year Make Model Submodel
2004-2007 Subaru Impreza WRX STI

Why Choose GSC Power-Division?

  • Leading camshaft specialist for Subaru motorsport with profiles used in championship-winning builds.
  • USA-made with rigorous dyno testing for proven real-world performance.
  • Advanced CNC grinding ensures perfect lobe symmetry and longevity.

Frequently Asked Questions

  • Q: Will these cams fit 2008+ STI models?
    A: No these are for USDM 2004-2007 STI with Intake AVCS only. Use GSC 7030S2 for 2008-2021 dual AVCS EJ257.
  • Q: What material are the cores made from?
    A: High-strength billet steel cores with custom bronze-throated followers for reduced wear and precise oiling.
  • Q: What warranty is provided?
    A: GSC offers a one-year warranty against manufacturing defects with lifetime core exchange program available.

Shipping & Handling

  • Method: UPS Ground or FedEx Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Custom protective tube 28 x 5 x 5 inches
  • Weight: 7.8 lbs

Request For Information

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