Speedwerx QO Series and L2 Series Stainless Steel Bolt-On Exhausts for the Polaris RZR PRO XP available for pre-order now on www.speedwerx.com! These Bolt-On Exhausts are designed to increase power, add acceleration and throttle response, lose weight and give your machine a new deeper, throatier sound. With these exhausts, you are also eliminating the catalytic converter that is inside the OEM muffler- that means more air flow for better performance, and less heat retention for cooler engine com