"Kolpin's Stealth Exhaust system allows ATV and UTV users to enjoy their sport and still comply with state and trail regulations by reducing exhaust noise without sacrificing performance. Great for recreational riders, hunters and all outdoorsmen. Material Type Steel, Water Resistant Yes, Dimensions L x W x H in. 12 1/2 x 4 1/4 x 5 3/4, Accessory Type Parts/hardware, Color Black, Size 2.0, Mounting Hardware Included Yes, Compatible With ATV/UTV w/four-stroke engine. Engineered with an innovative high/low restriction muffler Quiets exhaust noise by up to 50 with no loss of mid-range performance Baffled design has to packing to burn out Works with gas engines only"