GSC Power-Division Stainless Steel Exhaust Valves 32mm - Subaru Models (inc. 2002-2014 WRX / 2004-2021 STI) 2015-2021 STI

GSC Power-Division Stainless Steel Exhaust Valves 32mm - Subaru Models (inc. 2002-2014 WRX / 2004-2021 STI) 2015-2021 STIThe 32mm Stainless Steel Exhaust Valves will provide optimal performance under extreme conditions in the Subaru STI. GSC Power Division 32mm Stainless Steel Exhaust Valves Exhaust Valve Specs: 32mm in size Swirl polished heads for smoother air flow over the valve Back cut to reduce valve weight for higher rpm, higher boost pressure, and allow for more aggressive cam profiles without increasing valve spring seat pressures Valve stems are micro polished

these covers reduce the coefficient of drag in the same fashion the JDM underbody panels do

Powder-coated a nice wrinkle red finish to be corrosive resistant

and unique technology that gives them a winning edge on the street or track

This is the Killer B Motorsport 84mm to 3-Inch Coupler that has been designed to work with the Killer B Extreme Flow HARD Turbo Inlet

900mm x 600mm x 10mm in size

All necessary hardware

STX Legal hard bushing for you Autocross guys who wish to meet the strict requirements of some classes

Includes 4 valve stem caps

MAKE YOUR FILTER BREATHE AGAIN

No modification is required during the installation

non-corrosive

WHP on E85 at 58psi 90%DC Turbo = 668