GSC Power-Division Exhaust Valve Guide Set (STD) (gsc3087-8) 40200 added an Off-Road gate plate

added an Off-Road gate plate with multiple functions for off-roading

6 GT3 Description_ASM Front EBC RP-1 Race Brake Pads FMSI D991 2007 thru 2009 PORSCHE 911 (997) (Cast Iron Rotor only) 3

Convertible EXCEPT NISMO

5 psi Pulley (Upgrades Available)

GSC Power-Division Exhaust Valve Guide Set (STD) (gsc3087-8) 40200 added an Off-Road gate plateGSC 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