APEXi® Flange Type Exhaust Control Valve (2.4" Diameter) (155-A022) 2551 these rubber hoses are exposed

these rubber hoses are exposed to high temperatures

NX4-XTR4 kit features an Xtreme pressure plate for the most demanding driver

Bilstein's engineers rely on not only technology that is truly at the cutting edge

We've also removed the turbo muffler

APEXi® Flange Type Exhaust Control Valve (2.4" Diameter) (155-A022) 2551 these rubber hoses are exposedFlange Type Exhaust Control Valve (155 A022) by APEXi. Main Piping Diameter: 2. 4". The ECV was created as an alternative to the standard silencer typically fitted in the tip of performance exhaust systems to lower the sound decibel output. The ECV (Exhaust Control Valve) is a spring loaded butterfly valve that can be installed to the main piping of an existing exhaust system. The angle of the valve can be modified on the fly from within the cockpit