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FMF Q4 Spark Arrestor Slip-On Exhaust
FMF Q4 Spark Arrestor Slip-On Exhaust

$287.99 - $350.99
10% Off - Save up to $39.00

Item #FMF001G

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24 Reviews
4.5 out of 5 stars
5 Star   16 4 Star   6 3 Star   0 2 Star   1 1 Star   1
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All Reviews
Verified Purchaser
Ukiah, Ca.
Ease of Installation 5/5 Style 5/5
New Exhaust Honda XR650L

The finish of the Q4 muffler is very good. However, the fit has the muffler
touching the rear fender. (just slightly) I added a small spacer (along with the supplied spacer) to get a little more clearance. Can't comment on performance or durability yet.

Expert Verified Purchaser MotoSport Staff
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Over all great choice.

What an amazing purchase this was, with the easy install and the great sound you cant go wrong.

Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 4/5
Smooth power no more backfire

Awesome pipe, super easy to install, smoothed out the power band on my 06 yz450f, nice and quiet and makes my bike off road legal everywhere, will be putting FMF pipes on all my future bikes.

Durability 4/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Crf150r Q4

I just bought a new crf150r and i mostly ride trails and around the neighborhood. I needed something to make this bike more quite and have a spark aresstor so i got this. overall i think this purchase was a great one, shipping was very fast and free, I would defiantly recommend this to a friend.

MotoSport Staff
Portland, OR, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Looks good, sounds good

Looks good, fits correctly, sounds good, and is much quieter than stock without any loss of power. I am using it with the spark arrestor insert installed and am very happy with the performance.

Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5

Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5

I purchased this for my 2014 Honda XR 650L, it fit and sounds awesome

Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5

Denmark
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Q4 on a WR250F

It fit like a glove, no problem at all, from pulling the Q4 out of the box to finish installation, it took max 10 min.
Great sound, looks and super performance.
I have the Powerbomb header, it slipped right on.

FMF Q4 Spark Arrestor Slip-On Exhaust
Verified Purchaser
Power 1/5

See 10 More Reviews
15 Questions
Answered:   14
Not Yet:   1
DPMX7
Q: Is this a quite exhaust? 07 crf150r
1 month 18 days ago
I’m looking to make my crf150r quitter is this a good slip on to go with or are there quiter ones?
BillyEXT3407
Top 25 Contributor
1 month 18 days ago
A: The Q4 is a quiet exhaust with a Max Sound output 96 dB, most models below 93 dB. I am not aware of a quieter exhaust on the market today.
Bondy
Q: Will the bolt straight on to my 510 TXE husqvarna 09
1 year 2 months ago
Devin
Q: Fitment
1 year 10 months ago
Will this pipe slip on my stock crf230f? And will I have to rejet it with the all stock?
MotoSportExpert
MotoSport Staff Expert
1 year 10 months ago
A: Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct muffler for your bike. Normally when installing a slip-on only minor jetting changes are needed, if any at all. If your bike is currently jetted properly you will likely not have to make any changes after installing this slip-on. I would recommend installing the exhaust and riding the bike to see how it is running then tuning your carburetor from there if necessary. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Madison
Q: Will this fit a 2007 Suzuki LT-Z250?
1 year 10 months ago
MotoSportExpert
Expert MotoSport Staff
1 year 10 months ago
A: Yes. Just be sure to correctly select the Year/Make/Model of your ATV before ordering so we can be sure to send you the correct exhaust for your ATV. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Jack
Q: Will this fit on a Honda 2000 300 ex
2 years 4 months ago
MotoSportExpert
Expert MotoSport Staff
2 years 4 months ago
A: Yes the FMF Q4 Spark Arrestor Slip-On Exhaust fits your 2000 Honda TRX300EX. Just be sure to correctly select the Year/Make/Model of your ATV before ordering so we can be sure to send you the correct exhaust for your ATV. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Nick
Q: Would this fit a powerbomb header?
2 years 6 months ago
MotoSportExpert
MotoSport Staff Expert
2 years 6 months ago
A: Yes the FMF Q4 Spark Arrestor Slip-On Exhaust will work with either the Powerbomb or Megabomb header.
Jonathan
Q: Will this fit my 2006 Honda CRF150F with the stock header? Also,is this in spec with sound restrictions on Michigan ORV Trails?
2 years 7 months ago
MotoSportExpert
Expert MotoSport Staff
2 years 7 months ago
A: Yes. All of FMFs testing is done around one of the FMF pipes, but FMF does build them so that they will fit up to and work with a stock OEM pipe. Expect similar gains with FMF silencers on a stock pipe as you would when using it with an FMF pipe.
The FMF Q4 Spark Arrestor Slip-On Exhaust has a Max Sound output 96dB; most models below 93dB.
Jackson
Q: If I order the Q4 for my 2008 honda crf150r, can I put a Db dawg silencer insert in it and if so what size Db dawg should I get?
Over 3 years ago
MotoSportExpert
Top 1 Contributor
Over 3 years ago
A: The DB Dawg is a universal product. You will have to measure the ID of the outlet of the muffler to get the correct sized DB dawg product.
Hunter
Q: Will this fit my crf150f 2014
Over 3 years ago
Note I will leave my scock header on. So will this fit with the stock header
MotoSportExpert
Expert MotoSport Staff
Over 3 years ago
A: Yes this FMF Q4 Spark Arrestor Slip-On Exhaust will work with the stock header on your 2014 Honda CRF150F. Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct exhaust for your bike. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Tommybattelle
Q: Could i buy a new mid pipe to fit my rmz?
Over 3 years ago
I bought this pipe off of someone on Craigslist. It's for a 2005 rmz 250, but the mid pipe is different and doesn't fit my bike. Am I able to buy a mid pipe to fit my bike?!
MotoSportExpert
Top 1 Contributor
Over 3 years ago
A: No. FMF does not sell a mid pipe for the FMF Q4 series exhaust.
1 - 10 of 15
Fitment
See all bikes that this part fits...
See Fitments
# Part Numbers
Product Variant Manufacturer Part #
Aluminum 041287
Aluminum 041249
Aluminum 041332
Aluminum 041365
Aluminum 041255
Aluminum 043236
Aluminum 043208
Aluminum 042149
Aluminum 043211
Aluminum 042156
Aluminum 043207
Aluminum 045124
Aluminum 045227
Aluminum 042116
Aluminum 042118
Aluminum 043203
Aluminum 044285
Aluminum 044286
Aluminum 041330
Aluminum 041331
Aluminum 044437
Aluminum 041338
Aluminum 044232
Aluminum 044195
Aluminum 044199
Aluminum 044291
Aluminum 044210
Aluminum 044301
Aluminum 041333
Aluminum 041334
Aluminum 041337
Aluminum 041339
Aluminum 042320
Aluminum 042321
Aluminum 043206
Aluminum 044288
Aluminum 045533
Aluminum 045538
Aluminum 045539
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