These ram air ducts are designed to face forward, with the opening and outlet perpendicular to the direction of travel. Gradually tapering openings help to minimize turbulence and air disruption. They are perfect for mounting in a bumper cover, air dam, or headlight opening. All are made of sandable, paintable ABS black plastic. 
Our inlet ducts were designed using computer-aided analysis and wind tunnel testing for maximum air flow with minimal drag. They are molded from tough, high-impact black HDPE plastic. An integral flange (approximately 3/4" wide) makes them easy to rivet to body panels or bond to composite panels with epoxy.
This Small size has a single offset outlet nipple that accepts our 3" duct hose (sold separately). Approximately 9.5" long x 5" wide rectangular opening is ideal for mounting in a bumper cover or air dam. For best performance, the duct should be positioned so that the outlet nipple is approximately parallel to the direction of travel.

Note: These ducts are designed and built for racing use. They are not built for show cars. You can sand and paint them, but do not expect a "show-quality" finish out of the box.