Aftermarket Assassins 2022-Up RZR Pro R 4 Cylinder Header Pipe **5-10 Day Lead Time**Looking for a header to complete the look and performance of your AA slip on exhaust? Then you need the AA stainless steel Pro R header! The OEM header is an odd 2 into 2 into 1 design and has many areas to improve upon. We set out to make a functional header that looks great. Nearly 6RWHP peak and over 4 RWHP max gain over the stock header when used with AA ECU flash and AA slip on exhaust. This is nearly 8 9 crank horsepower gains at 60mph and does