Rzr 900S Performance HMF Dual Exhaust System
The Polaris RZR S 900 is available as a Dual Full System in the Performance Series. The Dual Full System picked up 5 horse power with 3lb of torque. The Performance Full System weighs 17lbs (6lb less than stock). At idle, the stock muffler is sound level is at 84 decibels and the Performance Dual Full (with Quiet Cores) is at 88 dB (4dB more than stock).