Bikeman Exhaust / Pro XP - TurboRSKU: 17 328 Get the most power out of your Polaris Turbo RZR. This exhaust has awesome flow with the 2. 5" diameter all the way through the exhaust. Pair this with a tune and you will be ripping hard wherever you ride. All stainless steel design 3 inch from turbo to muffler Hand built in house here at Bikeman St. Croix Falls, WI Does not require a tune but there is much to gain with our level 1 slip on exhaust tune with limiters removed as well