GSC Power-Division Billet Camshafts for the USDM 04-07 STi with intake only AVCS. S1, S2 and S3 cams are available. Sold as a set of 4 camshafts.
Vehicle Fitment:
2004-2007 Subaru STi
*EJ255/7 USDM models with AVCS
| Cam | ADV Duration | Duration @ 0.040″ | Peak Lift | Center Line |
| S1 Intake | 268° | 225° | 10.80mm | 125° |
| S1 Exhaust | 268° | 225° | 10.40mm | 115° |
| S2 Intake | 272° | 230° | 10.80mm | 125° |
| S2 Exhaust | 272° | 232° | 10.40mm | 115° |
| S3 Intake | 282° | 240° | 11.50mm | 130° |
| S3 Exhaust | 282° | 240° | 11.50mm | 115° |
7025S1 S1 Cams (268/268)
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.
7025S2 S2 Cams (272/272)
These cams are built to suit the high horsepower Subis. With a power range of 500 WHP and up, you need some certain mods to utilize the true potential of the S2s: built motor, with a built/ported head, and a turbo capable of supporting 500+ WHP. Upgraded valve springs are required; beehive valve springs are recommended, but not required.
7025S3 S3 Cams (282/282)
These cams are built to suit the high horsepower drag STi. With a power range of 750-1000 WHP and a rev range of 4500-9500 RPMs, you need some certain mods to utilize the true potential of the S3s: built motor, with a built/ported head (clearanced for lift), and a standalone engine management system. Upgraded valve springs are required; beehive valve springs are recommended, but not required.
Install Notes:
• Check pictures for cam placement. Long nose = Left Side, short nose = Right Side
• Due to the lobe size, head castings will 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 
| Select Camshafts: | S1 268/268 (7025S1), S2 272/272 (7025S2), S3 282/282 (7025S3) |
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