These will also fit the following vehicles: 04-07 STI, 06-14 WRX, 04-13 FXT, 05-12 LGT with Intake AVCS
GSC Power-Division Billet S1 Camshafts for the USDM STI and WRX with Intake only AVCS will not drop any low-end power and will create additional power and torque across the entire RPM range. The cams are good for stock frame upgraded turbos or up to 500 WHP upgrades. Upgraded valve springs are required; GSC beehive valve springs are recommended, but not required.
Specs:
| 7025S1 | ADV Duration | Duration @ 0.040" | Peak Lift | Center Line |
| Intake | 264° | 226° | 10.80mm | 125° |
| Exhaust | 264° | 222° | 10.50mm | 115° |
GSC Recommendations:
- 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