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GSC P-D Subaru EJ255/EJ257 (USDM) w/Intake AVCS S1 Cams 268/266 Billet

GSC7025S1
GSC7025S1
Camshafts
18 Units In Stock - Ships Next Business Day
$ 1,175.63 $ 999.29
$ 999.29

SKU: 7025S1 | UPC: 617626702517

GSC Power-Division S1 Billet Cams 268/266 – Subaru WRX EJ255 & STI EJ257 w/ Intake AVCS (USDM)

The GSC 7025S1 delivers the top-selling street and track camshaft choice for 2004-2021 WRX EJ255 and STI EJ257 engines with intake-only AVCS in USDM models. Precision-ground from new high-nickel billet cores these 268° intake and 266° exhaust cams produce 30-55 whp gains on built motors. They ensure stable idle and daily drivability while supporting 400-700 whp setups.

Key Features

  • 268° Intake / 266° Exhaust Duration @ 0.050": Balances power across RPM range for street track use
  • 10.80 mm / 10.20 mm Lift: Clears stock or +1 mm valves safely with proper setup
  • 100% New Billet Cores: Fresh USA-ground cores eliminate regrind risks no core charge
  • Designed for 400–700 whp Builds: Matches E85 big turbo and strengthened bottom ends perfectly
  • Made in the USA: Lifetime warranty covers manufacturing defects fully

Product Notes

  • Fits all USDM EJ255 2004-2014 WRX and EJ257 2004-2021 STI with intake-only AVCS
  • Will NOT fit dual AVCS heads on 2008+ STI models
  • Valve spring upgrade required GSC 5041 beehive springs recommended

Installation Notes

  • Professional installation and degreeing required
  • GSC beehive springs and titanium retainers recommended
  • Tune required after camshaft installation

This Part Fits

Year Make Model Submodel
2004-2014 Subaru Impreza WRX EJ255 Intake AVCS
2004-2021 Subaru WRX STI EJ257 Intake AVCS only

Why Choose GSC Power-Division?

  • Official cam supplier to multiple 1000+ hp record-holding EJ builds
  • Every cam ground from new USA-made billet cores
  • Used by more championship-winning Subarus than any other brand

Frequently Asked Questions

  • Q: Will these work on my 2008–2021 STI with Dual AVCS?
    A: No use GSC 7025S2 or 7025S3 for Dual AVCS heads.
  • Q: Do I need a valve spring upgrade?
    A: Yes GSC 5041 beehive kit is the perfect match.
  • Q: Safe on stock valves?
    A: Yes clears stock and +1 mm valves with proper machining.

Shipping & Handling

  • Method: UPS/FedEx Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Official GSC box with foam protection approx. 26" x 7" x 7"
  • Weight: 11 lbs

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