How it works: DMH Electric cutouts are designed to better your cars performance and feel. the cutout works by welding into your stock or modified exhaust. they can be placed anywhere after the headers. to open the cutout you press a switch, which opens cutout, releasing your exhaust. this enables you to bypass your muffler, increasing horsepower and giving your car an extremely throaty rumble. click one of the movies on our "Photo Gallery" page to see and hear the cutout in action! the item is for the E-cutout only unless the option With Black Flowtech pipe is chosen. Movie close-up of cutout Never crawl under your car again to remove the cap from your cutout Maintainance free design! cNc Machined 6061-t6 aircraft grade aluminum body .375 diameter 316 Stainless Steel Shaft torrington Needle Bearings for years of trouble free service High torque gear motor Plug and play 16GA. Belden Wiring Harness Small black rocker switch is only .75" X .50" Proven Design with over 4 years of real world testing