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Item #136094
FMF Racing Q4 Spark Arrestor Slip-On Exhaust
$376.99 - $792.99
$376.99 - $792.99
15% off
FMF Racing Q4 Spark Arrestor Slip-On Exhaust Item # 136094
Description
FMF is the leader in high performance quiet technology and the Q4 is the next evolution in off road exhaust. The Q4 employs intricate chambers, baffles and proprietary multistage packing material making it the best performing quiet muffler available. With the Q4 you don't need to hear the power, just feel the power!
Features:
- Developed over years of championship off-road racing
- Max Sound output 96dB; most models below 93dB
- Constructed from aircraft grade aluminum and high strength stainless steel
- Compatible with FMF or Stock OEM Header
- Spark arrestor included
Part Numbers for FMF Racing Q4 Spark Arrestor Slip-On Exhaust
Fitment for Parts FMF Racing Q4 Spark Arrestor Slip-On Exhaust
This part fits the following vehicles:
Reviews
Rated 5 out of
5
by
Anonymous from
Should come as a factory part
I installed the FMF Q4 with the FMF PowerBomb and FMF EFI Programmer on my WR250X and noticed a nice increase in power/responsiveness. Nice deep sound too. Not too loud though.
Date published: 2014-04-19
Rated 4 out of
5
by
Durt Reynolds from
Power without the noise.
I bought this to replace the FMF Powercore 4 that was originally installed. The Powercore 4 was way too loud, even after I repacked it. This Q4 pipe is much quieter and I did not notice much of a power difference from the Powercore 4.
Same bite with less bark!
Only gripe is the cheesy mounting hardware made of thin stamped metal where the header mounts to the frame. The Powercore has a proper threaded bolt on the header for installation to the frame. The Q4's clip stripped easily and now the pipe rubs on the rear shock. Strange that the more expensive Q4 hardware was not as good as the Powercore4. Going to have to contact FortNine or FMF to get a new clip.
Date published: 2017-08-14
Rated 5 out of
5
by
Lenny from
Perfect sound, perfect volume!
I bought this exhaust at the start of the summer (2017) and put it on my 2007 Yamaha YZ450F, as I enjoy riding bush trails and forest roads. I needed a spark arrestor type exhaust, and also wanted something quieter than stock so I wouldn't annoy all of my neighbours at camp. The Q4 ended up being the perfect choice. The power improved a bit on the bike, while the sound is great. It keeps the throaty growl and bark of the thumper we all love, while just reducing the overall volume to manageable levels. Definitely would recommend the Q4 to anyone.
Date published: 2017-08-10
Rated 5 out of
5
by
Gavo from
Fits 2016 ktm 690 enduro r
Bought the newest model i think it was for the 2014 and it fits the 2016 ktm enduro r no problem. Sounds great. Alot louder but not to loud.
Date published: 2016-08-13
Rated 5 out of
5
by
Big D from
Nice exhaust!
I needed to replace my Big Gun exhaust on my ‘14 KLR 650. After 40k and it being way too loud, I bought the FMF slip on and within 10 mins, I had the old one off and the new one on! Nice to feel back pressure again! Sounds good too!
Date published: 2022-09-23
Rated 5 out of
5
by
McQueen from
Very pleased
No problems, happy happy. Quick delivery right to the doorstep.
Date published: 2018-06-06
Rated 5 out of
5
by
Justin from
Excellent
Very happy with new FMF exhaust much quieter than my old DG Bullet very good price as well
Date published: 2018-05-25
Rated 4 out of
5
by
Dirtrider from
Awesome
Slip on exhaust fits 2017 Wr250r with very slight modification. However the included bolts were either to short or to long. Had to cut down factory bolt. Maybe you could add a couple more bolts of different lengths. Sounds awesome! Looks Awesome. Other than shipped with small dent very happy.
Date published: 2017-08-09
Questions
Would it fit straight to the 2018 Suzuki dr650 or do I need to order something else? Thanks
This will fit straight onto your stock or FMF header. There is nothing else that you need to order.
Make sure you enter the year, make and model of your vehicle on the product page to receive the vehicle specific part for your application
Date published: 2020-05-31
Does this come with a mid pipe? Will it fit onto my 2021 klx300?
What jet is recommended with this muffler?
It depends on your bike. Two stroke or four. I went up one size for both the main and pilot and adjusted the mixing screw. Best to check the forums for your particular bike. You may find that you don’t need to rejet at all if it’s running to your liking. Good luck.
Date published: 2019-08-21