HMF Exhaust for Polaris RZR S 1000 is available as a Dual Full System in the Performance & Titan Series, as a single Slip-On in the Titan Series, or as a slip-on in our ulta-quiet Twin Loop Slip-On System. The Dual Full System picked up 5 horsepower with 3lb of torque. The Titan-QS picked up 3 horsepower and the Titan-XL picked up 4 horsepower. The Performance Full System weighs 17lbs (6lb less than stock). At idle, the stock muffler sound level is at 84 decibels and the Performance Dual Full (with Quiet Cores) is at 88 dB (4dB more than stock). The Titan-QS is at 85dB and the Titan-XL at 88dB. HMF exhaust systems come with a free spark arrestor for each muffler purchased. If you Find it cheaper elsewhere call us! Slip On Exhaust Fits: RZR S 1000, General, General 4. Dual Full Exhaust Fits: RZR S 900, Trail, XC, RZR 4 900, RZR S 1000, General 1000, General 4.