GSC Billet S1 Camshaft set 2006-2014 WRX & 2004-2007 STI

Description:
GSC Power-Division Billet S1 camshafts for the USDM STi and WRX with Intake only AVCS. These will not drop any low end power, and will creating more power and torque across the entire rpm range. Good for stock frame upgraded turbos or up to 500WHP upgrades. Upgraded valve springs are required; Beehive valve springs are recommended but not required.

Features:
- Intake 268 / 225 @ .040" / Peak Lift 10.8mm / Centerline AVCS
- Exhaust 266 / 225 @ .040" / Peak Lift 10.4mm / Centerline 113

Note:
Due to the lobe size, head castings may need to be filled 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
Requires upgraded valve springs

Applications:
2006-2014 WRX
2004-2007 STI