K-Tuned Throttle Body Velocity Coupler (Civic Si to 3.5") - KTD-TVC-6035 9.5" Width NS3-XTG4 kit features an Xtreme

NS3-XTG4 kit features an Xtreme pressure plate for the most demanding driver

our 3" Stainless Steel Dual Tip Cat-Back for the Ford Focus ST is a direct replacement cat-back exhaust that boasts full 304 stainless steel construction

Mishimoto silicone hoses retain OEM fitment while providing increased pressure tolerance for the ultimate upgrade in performance and style

An IGUS Polymer bearing and aluminum carrier which work in conjunction to eliminate slop in the factory shifter

5 PSI (-1 to 3 BAR) / 7

K-Tuned Throttle Body Velocity Coupler (Civic Si to 3.5") - KTD-TVC-6035 9.5" Width NS3-XTG4 kit features an XtremeThe K Tuned velocity coupler is made from reinforced 4 ply silicone. This unique part completely removes the step commonly found at the throttle body opening, which straightens and accelerates the intake airflow and in turn helps the engine breathe easier. Intake system design and overall airflow into an engine can be critical to making maximum power. The coupler has been engineered to improve an engines volumetric efficiency similar to the way a