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4-Stroke Exhaust4-Stroke Exhaust

4-Stroke Exhaust from Rocky Mountain ATV/MC

Exhaust systems in either full race or with tuneable spark arrestors and different tips to give you that perfect power output for either motocross or trail riding.

Latest UTV 4-Stroke Exhaust Reviews – You could win up to $500 for reviewing products!

  • FMF Q4 S/A Silencer

    FMF Q4 S/A Silencer

    Thomas in AB

    Easy install

    Nice sound and easy to install.

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  • FMF Power Core IV Exhaust System

    FMF Power Core IV Exhaust System

    JOE in NY

    Great all around pipe

    Good for all types of riding, looks great

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  • FMF Power Bomb Header Pipe - Moto

    FMF Power Bomb Header Pipe - Moto

    Sandra in MA

    Awesome

    I just put the fmf power bomb header on along with fmf's power core 4 silencer and I am amazed with the the difference in power! Very very snappy throttle response and great low to mid range power and even in the top end it is great! Can hardly keep the front tires on the ground!! It sounds absolutely awesome too.

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  • FMF Power Core IV S/A Silencer

    FMF Power Core IV S/A Silencer

    Sandra in MA

    Awesome

    I just put the fmf power core 4 on along with the fmf power bomb header and I am amazed with the the difference in power! Very very snappy throttle response and great low to mid range power and even in the top end it is great! Can hardly keep the front tires on the ground!!

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  • Pro Circuit T-4 S/A Complete Exhaust System

    Pro Circuit T-4 S/A Complete Exhaust System

    Paul in AZ

    Great Product to install on your bike.

    Bought this for my wife's bike and it woke it up. Noticed better power throughout the range. It allowed her to pull the hills better. I was impressed with the noise level. Sounds great without making is loud. Would buy again anytime. Well worth the money for a mod to increase power.

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  • Lexx MXe Slip-On Silencer With Mid-Pipe

    Lexx MXe Slip-On Silencer With Mid-Pipe

    Tony in CA

    Good product for the money

    The quiet core cracked after a couple of rides, but it was replaced immediately with a new one that seems to be better quality. No issues with new core. I wish they would make a carbon fiber end cone for this pipe. Fits well, looks good, and provided a noticeable improvement in performance.

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