The Polaris Sportsman and Scrambler XP 1000 S exhaust systems are available as a Dual Full System in the Performance Series and a Single Slip-On System in the Titan Series. Performance Series: The 4” diameter aluminum silencers are 14″ cans with a stainless steel head pipe that will replace the entire exhaust system. Titan Series: The 5″ stainless steel Titan Slip-On System retains a similar layout as the stock exhaust while still retaining the signature HMF design. Available in both the Loud (XL) and Quiet (QS) options. Free spark arrestor with each muffler ordered!