HMF Exhaust RZR 4 900 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 sound level is at 84 decibels and the Performance Dual Full (with Quiet Cores) is at 88 dB (4dB more than stock). Found this system cheaper? Contact us.
Dual Full Exhaust Fits:
(15-20) RZR S 900, Trail, XC
(15-18) RZR 4 900
(16-20) RZR S 1000
(16-20) General 1000
HMF Exhaust RZR 4 900, if your simply looking for the best Exhaust for Polaris RZR 4 900 look no further than HMF Racing. They offer the strongest materials and most durable finishes on all products built. Lets not forget huge horsepower and torque gains. HMF offers durable long lasting products, they stand behind the product taking care of the customer in the event their is a problem.
- Flash performance tunes via OEM diagnostic connector, no need to remove and sent out ECU
- Display vehicle data channels in real-time
- Weather resistant for use in all riding conditions
- High contrast display which is viewable in direct sunlight
Performance Tunes:
- Fueling revised for maximum power and torque
- Tunes available for popular aftermarket modifications
- Spark timing optimized for 91-93 octane fuel
- Rev limit raised
- Speed limit raised
- Torque limiting functions reduced or eliminated
- Revised drive-by-wire throttle profiles
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