GSC Power-Division Exhaust Valve Guide Set of 10-Standard (gsc3069-10) _T304_Stainless_Steel Simply flash your GT3 and

Simply flash your GT3 and GT3 RS with a Fabspeed ECU Tune utilizing the included handheld tuner

ensuring reliable performance for extended towing and fuel system support

tuned and dyno-tested to fit specific Chevrolet Cobalt models

Achieve maximum power from the Ferrari 599 6

This system features dual high-flow stainless steel mufflers

GSC Power-Division Exhaust Valve Guide Set of 10-Standard (gsc3069-10) _T304_Stainless_Steel Simply flash your GT3 andGSC has quite simply made a series of 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 the industry with the best quality