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FMF Hex Q4 S/A Silencer

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

Our Price: $341.99$431.99

MSRP: $379.99 - $479.99 - You save up to $48.00 (10% off)

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Details

    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.

    Specs:
  • 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
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

FMF Hex Q4 S/A Silencer Reviews

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WRITE A REVIEW
4.7 / 5.0
29 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
22
5
1
1
0
Value
4.6 / 5
Durability
4.7 / 5
Ease of Installation
4.9 / 5
Fitment
4.8 / 5
Performance
4.8 / 5
Finish
4.8 / 5
Features
4.8 / 5
Recommend it?
Yes (16)
No (1)
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Sneaky Sneaky Silencer
My other half got this for his Honda CRF 450X. It was super easy to install and it does make a difference compared to my bike. Very impressed with how it fits right in place!!

-m-2019 HONDA CRF450X--
February 24, 2020
Tehachapi , CA, US
Age: 25-44
Purchased
3 weeks ago
Gender:
Female
Value
4 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Classic FMF performance, in a quiet pipe
I bought this because I want a silencer that delivers performance without being obnoxiously loud. I am happy with my purchase and would recommend this to anyone looking for same characteristics. It is slightly longer than the stock silencer.

-m-2017 YAMAHA WR450F--
January 19, 2020
NEW PORT RICHEY, FL, US
Purchased
2 months ago
Value
4 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
4 / 5
Features
4 / 5
Recommend it?
Yes
Needed a spark arrestor
This is my third Q4. Good pipe, though not exactly the quietest. Gotta have the USFS approved S/A if you ride public lands.

-m-2019 HUSQVARNA FX 350--
September 10, 2019
Los Alamos, NM, US
Age: 45-64
Purchased
over 4 years ago
Gender:
Male
Weight:
131 - 160 lbs.
Height:
5'10 - 6'0
Value
4 / 5
Durability
4 / 5
Ease of Installation
5 / 5
Fitment
4 / 5
Performance
3 / 5
Finish
3 / 5
Features
3 / 5
Pretty good
Overall it's ok still loud thought it was going to be more quiet
July 18, 2019
Suffolk, VA, US
Age: 25-44
Purchased
9 months ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
4 / 5
Performance
5 / 5
Finish
4 / 5
Features
5 / 5
Recommend it?
Yes
Great sound and power
This pipe gives a great quieter sound and takes away all worries of tickets because it is USFS compliant. The only thing I don’t like is how much longer it is than my stock YZ 450 pipe.

-m-2016 YAMAHA YZ450FX--
May 16, 2019
Craig, CO, US
Age: 25-44
Purchased
10 months ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Nice Pipe
This is a nice quiet muffler

-m-2017 YAMAHA YZ450FX--
February 1, 2019
Richmond , VA, US
Age: 45-64
Purchased
1 year ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Value
4 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Great Product!
This muffler works great! Bolted right up with ZERO fitment issues. Slightly louder than stock when hard on the gas but just as quiet as stock otherwise. Lighter than stock as well. It really woke the bike up performance-wise. The bike runs a lot cleaner and the throttle response is much better. More power too.

-m-2011 KTM 530 EXC-R--
October 7, 2018
Tehachapi, CA, US
Age: 45-64
Purchased
1 year ago
Gender:
Male
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
looks good, it does look a bit longer tho
just installed it, fitment was perfect, paired it with the mega bomb header from fmf, is a lot more quiet, going to test out here pretty soon :) :) :)

-m-2009 KAWASAKI KX250F--
User submitted image
Added Jul 11, 2018
July 11, 2018
kankakee, IL, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Value
5 / 5
Durability
4 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Recommend it?
Yes
Excellent sounding exhaust
Great value, not too loud at normal riding speeds. It is louder when you get on the throttle, and has a an awesome popping sound when decelerating. Much better than stock, but nothing obnoxious either.

-m-2017 HUSQVARNA FE 501--
May 8, 2018
Windsor, CO, US
Purchased
1 year ago
Value
5 / 5
Durability
5 / 5
Ease of Installation
4 / 5
Fitment
4 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
great pipe
good looking part. small issues mounting it, could have been the bike, never been on the ground you know.... Overall I would recommend it.

-m-2005 HONDA CRF450X--
March 11, 2018
ashland, OH, US
Age: 45-64
Purchased
over 2 years ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'10 - 6'0
Show more
Rocky Mountain ATV/MC gift card Each question or answer submitted enters you into a:
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 7 questions Browse 7 questions and 35 answers
What's the diff between the Q4 and HEX Q4?
Jason E on Oct 13, 2019
BEST ANSWER: Price. They altered the innereds a bit. Check decibel readings for what you want.
Is the spark arrestor removable?
Casey W on Jan 20, 2017
BEST ANSWER: Not without pulling the muffler apart, Q4 is a quiet type muffler and pulling out the SA defeats the purpose of this model muffler. You might be better off with different type of muffler?
Can I buy just this as a slip on?!
Keiser E on Nov 6, 2017
BEST ANSWER: Yes the pipe slips on. The instructions recommend putting some high gasket seal on the connection. You can reuse your stock clamp and hangers.
Would this go onto the stock header of a 13 yz450f? Want to upgrade from stock with a spark arrester.
JOHN H on Feb 24, 2019
BEST ANSWER: Yes, slips right on, use a little high temp RTV to help with the seal, make sure you buy the one spefically for your bike
Will this require remapping of my injection system? Bike is a 2012 350xc-f
David K on Oct 27, 2018
BEST ANSWER: I put on on my 2018 fx350 with no map and the bike runs better than ever. More useable bottom end than stock with little to no change in the rest of the range. Seems to start easier as well.
Just bought one for 2015 KTM 250XCF-W, there is NO spring hook. Why not?
scott m on Feb 2, 2020
BEST ANSWER: I got one for my 350 exc and thought the same thing. A little sealent and slip it on and it's fine after it's bolted in place.
JUST INSTALLED ON A 2017 FE350. THIS DOESN'T SEEM TO BE UNDER 96DB, WAS THIS SUPPOSED TO BE SHIPPED WITH A QUIETER TIP?
Edward G on Jan 28, 2017
BEST ANSWER: No, it came with a spark arrestor that will drop the db a little bit, but that's it.
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