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  1. ATV Performance Modifications
    This past weekend, I installed a brand new HMF Titan QS on my Sportsman 850. I did not opt for the HMF Fuel optimizer - as I also just purchased a Dynojet Power Vision CX from RVS. I am currently waiting for my custom tune. Once I installed the new HMF slip-on, I took a quick ride around my...
  2. Polaris Sportsman
    Has anybody tried the quiet core add on to the HMF muffler? My 550 is too loud. Thought about just getting a used stock muffler, but I see they have this quiet core. Does it make that much difference?
  3. HMF Racing
    The Polaris Sportsman 850 XP is available as a Slip-On system in the Titan and Swamp (with snorkel) exhaust. The Slip-On System picks up 3-4 more horse power throughout the power curve, and adds an incredible sound to the machine. The Titan/Swamp-Quiet exhausts are roughly 1-2dB louder than...
  4. Polaris Scrambler XP 1000
    looking into upgrading my stock exhaust system but theres a few options and i really want the best performance and more weight loss. any advantage to switching back to single exhaust ? big difference from full to slip on? whats the weight difference from stock for these systems? what kind of...
  5. ATV New Members
    Hi, I have a 2012 Polaris Sportsman 500 ho and I'm considering an aftermarket exhaust my top two choices are the Big Gun EVO exhaust or the HMF Swamp XL Series I'm looking for deep growl type of sound but I've heard the hmf dosnt sound that good on polaris's I need help deciding!!
  6. ATV Performance Modifications
    I am looking into getting a slip on exhaust for my sportsman 550 EFI. I am looking for something that is made for mudding/ swamp style. I don't want something quiet. I want it to sound tough. Something that adds horse power but does void my factory warranty. I was looking at HMF swamp XL. Does...
  7. ATV Parts Wanted
    I'm looking for any kind of aftermarket performance exhaust for a 2007 Sportsman 800 that currently has a factory dual exhaust. HMF Swamp, or Big Gun Evo would be nice. I want full exhaust with head pipe, not just the muffler. Thanks