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FMF Hex Q4 S/A Silencer
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    FMF Hex Q4 S/A Silencer

    Our price: $309.59$341.99

    MSRP: $379.99 - You save up to $70.40 (19% off)

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    • "Customer service is priority #1 at Rocky Mountain ATV/MC. We value our customers and strive to be the best shopping experience- when you buy from us, you are buying lifetime service."

      -Dan Thomas, CEO and Founder

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      With FMF’s Hex Q4 S/A Silencer, you don’t have to choose between low sound and excellent power.

      FMF has always set itself apart by offering great options to lower your bike’s sound output. The Hex Q4 is no different. With a series of internal baffles, chambers, and sound-absorbing materials, FMF has created a silencer that accelerates exhaust flow while still keeping noise low. So low that most machines will come in well below 96 decibels with some models coming in as low as 92 decibels. While your sound is lowered you are still keeping all of your power, gaining significant weight savings over stock, and a USFS approved spark arrestor.

      So don’t compromise when you need to meet sound and safety regs. Pick up an FMF Hex Q4 S/A Silencer and ride wherever you want.

    • Meets USFS and FIM World Enduro sound regulations
    • No power loss in entire rpm range
    • USFS spark arrestor included
    • Weighs pounds less than stock
    • Rugged design thrives in off-road riding
    • Made in the USA
    • Can be used with stock or FMF header
    • Sound output under 96 dbs and may be as low as 92 dbs

    FMF Hex Q4 S/A Silencer Reviews

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    0 of 0 people found this review helpful.

    Excellent Product

    Comments On May 04, 2015:Eliminated the back firing on deceleration, smoothed out the power band, great sound (no noticeable increase from stock) and easy to install. The FMF sticker was not fully adhered to the pipe.

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    0 of 0 people found this review helpful.

    Returned for 4.1

    Comments On Jan 30, 2015:FMF is quality stuff, no doubt. I returned the Q4 and went with the 4.1. The Q4 is more of a desert type silencer.. Its long and sticks out of the plastics on new bikes.

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    0 of 0 people found this review helpful.

    nice improvement

    Comments On Aug 22, 2014:A huge improvement over a stock WR exhaust. removeable spark arrestor is nice. The only downside is that the FMF decal on the back is a poor design. Both mine and my buddy's have already came off in about 6 months time.

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    1 of 1 people found this review helpful.

    14 yz 250f

    Comments On Jul 23, 2014:This pipe is nice and quiet. It seems to choke the bike up a bit. I haven't fine tuned the EFI yet. The fit and finish is very good, but it's about six inches longer than the stock pipe and will probably get damaged in a crash on the right side.

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    0 of 0 people found this review helpful.

    Perfect throaty sound!

    Comments On Jun 29, 2014:I waited a while to find the perfect exhaust. Reviews can only give you so much help. What helped me the most was actually hearing different exhausts on my bike. Not taking anything away from the Powercore 4, it was simply a little too loud for my taste. Too raspy at the top end. The Q4 has a tuned throaty sound throughout the rpm range. Plus, it's legal to ride everywhere. Simply another great product from FMF!

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    0 of 0 people found this review helpful.

    Read Before Buying!

    Comments On May 07, 2014:It's a sick exhaust! The sound is just barely deeper than stock but it's noticeable. More noticeable though, is the increase in torque. It definitely breathes better and responds much quicker. It's a big difference. A nice low end upgrade at a decent price. Be aware though, the FMF mounts are placed differently than the stock muffler and do not use the factory hardware. It comes with the bolt you need and everything lines up, it just didn't use the rubber grommets and spacers...they didn't fit. When I installed it, the rear fender plastic was touching the silencer to where it likely would've melted my plastic. To prevent that, I just used a dremel to cut an undetectable amount of plastic off the fender and added a few extra washers in-between the mounting hole on the subframe and plastic and boom! Good to go! Go up a tooth on the rear sprocket with this pipe for a well priced and effective upgrade!

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    1 of 1 people found this review helpful.


    Comments On Feb 12, 2014:It sounds wonderful and I can finally hear other riders when they are getting close.

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    1 of 1 people found this review helpful.


    Comments On Apr 30, 2013:I purchased this for one reason. it was for power... and that's what it gave me... I could tell the difference as soon as I put it on. I suggest it to all riders!

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