HMF 235483607488 Swamp Exhaust: Polaris RZR 570 Fits: 13-14 Slip On Round Side mounts Swamp End Cap VARIABLE SOUND: Choose either stock sound levels with the regular Swamp Series or full out, unrestricted sound levels with the Swamp XL Series. EQUAL POWER: The Swamp & Swamp XL Series distributes power evenly throughout the entire RPM range.