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had to have a spark arrestor to satisfy Forest service requirement. this was an easy, relatively cheap fix.
FMF
FMF Factory 4.1 Spark Arrestor Insert
FMF Factory 4.1 Spark Arrestor Insert
Description
Item #FMF0001
6 Reviews
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All Reviews
4 months 20 days ago
Cranbrook,BC
Exact fit. easy install
Over 5 months ago
San jose,ca
Does not fit a klx110l
Its a well build spark arrest and will work great on proper bike but dont buy if its for a fmf 4.1 on a klx110
Over 4 years ago
Ohio, USA
2007 YZ250F Spark Arrestor
Needed this to ride down at Hatfield Mccoy. Mildly changes the sound of bike but barely noticeable. Had to file the screw hole on the arrestor to fit the screw into the original hole that is on the exhaust. No big deal. It fits and it works for intended use.. no complaints.
Over 4 years ago
Over 8 years ago
battle creek
Very easy to install
bought this spark arrestor insert because I needed it for a trip to the sliver lake sand dunes. It was a very fast install which was one bolt and it worked great all weekend. Good buy
Over 10 years ago
Santa Maria, CA
Great purchase
The FMF spark arrestor was very simple to install, just had to unscrew a bolt in the end of the silencer and install the spark arrestor and screw the bolt back on.
Very simple, and it made my bike legal for enduro competition.
24 Questions
Ryan
Q: What is the OD of the 2 flanges for this S/A? And is it physically stamped USFS?
4 months 4 days ago
Ride 177
A: Yes it is stamped USFS approved. Face flange is 2 3/16" OD. Can't tell you what exact bore is, thinking around 1 7/8"OD(went in with block of wood and hammer, otherwise I would pull it out for exact OD) but the housing is 1 3/4" ID where the 2 screen holding pipes press in to it. Hope this helps.
Paul
Top 25
4 months 4 days ago
A: The FMF Factory 4.1 Spark Arrestor Insert is model specific and available in a variety of sizes to fit each particular FMF Factory 4.1 muffler.
To find the correct size, we will need to know the year, make, and model of your motorcycle, and which FMF muffler you have.
To find the correct size, we will need to know the year, make, and model of your motorcycle, and which FMF muffler you have.
Josh
Q: Ordered fmf without spark arrestor, can I put it on?
1 year 6 months ago
I just ordered my fmf powercore 4 exhaust for my 02 Honda xr100, but when I ordered it I didn't realize I got the option without the spark arrestor. So I was wondering if I got this would I be able to just add it on myself? And if so how is it installed?
jess
Q: I have a 2003 yz250f with stock exhaust
1 year 7 months ago
im pretty sure i have stock exhaust on my yz250f will this fit it?
Gaddy
Q: Needing a factory spark arrestor setup or something that I can put in my factory muffler on my 09 crf 150f
1 year 8 months ago
Max26
A: This will only fit the fmf factory 4.1 for most aftermarket pipes the manufacturer makes spark arrestors for it so whatever brand and model header you have that's the spark arestor you want to get for it
Bobo
Q: Will this fit?
1 year 8 months ago
I have a stock 2016 suzuki rmz450. Will this fit?
Max26
A: No it will only fit the fmf factory 4.1
Max26
A: No it only works on the fmf factory 4.1 exhaust that only nothing else
Braap
Q: Do I need to get 2 of these for my 4.1 dual system for 2013 crf 450?
2 years 7 months ago
MotoSportExpert
MotoSport Staff
Expert
2 years 7 months ago
A: Yes you would need two for the dual system. Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
alen
Q: Need a spark arrestor for a factory muffler
Over 3 years ago
hello
my bike is a honda 2004 xr250r.
factory pipe
i need a spark arrestor for the factory pipe,
which one or ones will fit?
thank you
alen
MotoSportExpert
MotoSport Staff
Expert
Over 3 years ago
A: You can find the stock spark arrestor for your 2004 Honda XR250R in our OEM section here: http://www.motosport.com/dirtbike/oem-parts/honda/2004/xr250r/muffler
hart
Q: Will this fit a 4.1 r.c.t. muffler. The pic shown looks like a power core bolt in. The fmf r.c.t spark screen clips in with a circular clip. There is
Over 4 years ago
I have a 2012 kx450. Fmf 4.1 r.c.
t muffler
MotoSportExpert
Top 1 Contributor
Over 4 years ago
A: FMF makes a specific product for their RCT Muffler for your Kawasaki KX450F 2012 model.
Josh7777
Q: Will this fit my bike
Over 4 years ago
I have a 2006 yz250F it has FMF power bomb header and an unknown slip on muffler, Im hoping it is FMF or factory. any way to tell? need a spark arrester so I can register it. thanks
MotoSportExpert
Top 1 Contributor
Over 4 years ago
A: The FMF Factory 4.1 Spark Arrestor insert is only designed to work with the FMF 4.1 exhaust systems. It will not work with the OEM 2006 YZ250F Yamaha or a different brand of exhaust system.
landfill
Q: Will this work on my 08 crf 450 with a powercore 4 ?
Over 4 years ago
MotoSportRyanT
Expert
MotoSport Staff
Over 4 years ago
A: No. This insert will only work with FMF Factory 4.1 Exhaust Systems.
Fitment
See all bikes that this part fits...
# Part Numbers
| Product Variant | Manufacturer Part # |
|---|---|
| FMF Factory 4.1 Spark Arrestor Insert | 040261 |
California Proposition 65
WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. For more information, go to www.P65Warnings.ca.gov.
