Race Ready Performance EC300D 3" Dual Electric Exhaust Cutout Kit Kit comes with 2-electric exhaust cutout valves, wiring harness, 1-illuminated rocker switch that controls both units, stainless steel mounting hardware, extra thick gaskets and the RRP lifetime limited warranty Cutout valves have a true double seal, they have a radius edge on the butterfly that fits into a bull-nosed seat as well as a hi-temp silicone o-ring and these cutouts will not leak Cutout valves have a gear-motor that can withstand the high heat and high vibration environment where most others fail, all steel gears in hi-temp grease and a proprietary motor that is second to none Being a gear reduction drive means that you can go fully open, fully closed, or anywhere in between and this product is covered under the RRP lifetime limited warranty Very easy to install but you may want to try the RRP remote control to significantly reduce installation time