The Polaris RZR Performance Series Dual Slip-On Blackout Exhaust System is a fine exhaust system by HMF Engineering. HMF Engineering has been perfecting and fine-turning their line of exhaust systems for years to create a range of exhaust systems that carry your side by side to new, exciting heights of amazing performance! This dual slip on exhaust system sports dual 16??? mufflers that roar loud enough to scare away the competition. These 16??? mufflers have the original turbo and downpipe heat shields too. All turbo back systems in this range all come fitted with 1 18mm O2 bung. Add up to 7 horsepower and 5lbs of extra torque with this 4??? aluminum exhaust system. Experience up to a 6dB increase in your muffler’s noise factor. You’ll be the envy of side by side machines with their basic OEM exhaust systems. Get more noise, more torque and more performance with HMF’s Performance Series Dual Slip-On Blackout Exhaust System.