Performance Series Dual Slip-On The 4” aluminum silencers pick up 5 hp and 3 ft-lbs with a 3-6 dB increase in sound. The slip ons replace the stock silencer and are significantly lighter. Dual Full Turbo-Back The 4” aluminum silencers and stainless steel downpipe picks up 6-7 hp and 4-5 ft-lbs with a 3-6 dB increase in sound. The downpipe includes a flex joint and custom laser-cut heatshield that mounts to the downpipe. Exhaust Fits: - (2016-2020) Polaris RZR XP Turbo - (2016-2020) Polaris RZR XP 4 Turbo - (2018-2020) Polaris RZR XP Turbo S - (2019-2020) Polaris RZR XP 4 Turbo S Tuning Typically, fuel tuning is not required when installing an HMF Exhaust on this machine. However, other modifications to the machine may require the need for fuel tuning to ensure the machine runs properly, and there is no damage to the exhaust system. See the tuning settings below for possible tuning solutions or Contact Us for more information.