GSC Power-Division Exhaust Valve Guides WRX 2002-2014 / STI 2004-2021 Subaru Turbo Models Vehicle Model_SC 400 lightweight 6061-T6 billet aluminum

lightweight 6061-T6 billet aluminum

making it a favorite among enthusiasts and professional tuners alike

• Progressive Spring Rate Design

For peak performance you need to know how much Vacuum you are making at maximum RPM's

516-05-5680

GSC Power-Division Exhaust Valve Guides WRX 2002-2014 / STI 2004-2021 Subaru Turbo Models Vehicle Model_SC 400 lightweight 6061-T6 billet aluminumPart #: 3027 8 What they have done is actually quite simple, they made valve guides that fit properly, are easier to install, and shaped to help air flow instead of just copying the OEM design. The GSC Power Division valve guides are made from true C67410 Manganese Bronze and turned on a dedicated precision CNC turning center. What this means for you and your installer is less time fitting guides to the head due to holding the tightest tolerances in