FMF Factory 4.1 Spark Arrestor Insert

FMF Factory 4.1 Spark Arrestor Insert
FMF Factory 4.1 Spark Arrestor Insert

$29.99

  • Description
  • 3 Reviews
  • 20 Questions
  • Fitment
Description Item #FMF0001

FMF Racing was started in 1973 by owner and founder Don Emler in a garage in Hawthorne, CA. Flash forward almost 40 years later where Uncle Donnie is still as hands-on as ever building the latest in performance in their state-of-the-art factory.

  • Replacement spark arrestor for FMF Factory 4.1 and 4C exhaust.
  • Note: If purchasing a Spark Arrestor Insert for CRF250R FMF Factory 4.1 Dual Exhaust, you must purchase the FMF Titanium Powercore S/A Insert. The Factory 4.1 Spark Arrestor will not work with the Factory 4.1 Dual Exhaust.
  • Note: NOT compatible with FMF Mini Factory 4.1 Exhaust.

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3 Reviews
4.8 out of 5 stars
5 Star   3 4 Star   1 3 Star   0 2 Star   0 1 Star   0
Spry89
Verified Purchaser
Ohio, USA
Durability   Ease of Installation   Performance   Power   Style  
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.

FMF Factory 4.1 Spark Arrestor Insert
milocrf450
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

g941
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.


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20 Questions
Answered:   19
Not Yet:   1
Brent
Location: North Carolina, USA
Q: Will this fit a Powercore 4 muffler?
10 days 11 hours ago
Braap
Q: Do I need to get 2 of these for my 4.1 dual system for 2013 crf 450?
Over 5 months ago
MotoSportExpert
MotoSport Staff Expert
Over 5 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?
1 year 2 months 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
Expert MotoSport Staff
1 year 2 months 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
Location: l.a
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?
1 year 10 months ago
I have a 2012 kx450. Fmf 4.1 r.c. t muffler
MotoSportExpert
Top 50 Contributor Top 1 Contributor
1 year 9 months ago
A: FMF makes a specific product for their RCT Muffler for your Kawasaki KX450F 2012 model.
Josh7777
Location: Colorado, USA
Q: Will this fit my bike?
1 year 10 months 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 Top 50 Contributor
1 year 9 months 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 ?
2 years 4 months ago
MotoSportRyanT
MotoSport Staff Expert
2 years 4 months ago Location: Portland, OR, USA
A: No. This insert will only work with FMF Factory 4.1 Exhaust Systems.
Steve
Location: Colorado, USA
Q: Will this fit a Q4 for a DR 650?
2 years 10 months ago
MotoSportExpert
MotoSport Staff
2 years 10 months ago Location: Portland, OR, USA
A: Unfortunately this will not fit the FMF Q4 mufflers. It is only designed 4.1 model mufflers. For the Q4, you need the SA quite core insert.
desimir777
Location: Colorado, USA
Q: Is it gonna fit on my 2011 ktm 250sx-f?
Over 3 years ago
MotoSportExpert
MotoSport Staff
Over 3 years ago Location: Portland, OR, USA
A: This will only fit your 2011 KTM 250sx-f, if you already have an FMF4.1 muffler installed. This will not fit a stock exhaust. If you have the stock exhaust and need to add a spark arrestor, you will need a Pro Moto Billet end cap that comes with the spark arrestor. Please make sure to profile your bike, so you receive the correct items specific to your bike for proper fitment.
Moto338
Q: I was wondering if there is a spark arrestor for a stock exhaust on my 07 CRF450R?
Over 3 years ago
MotoSportExpert
MotoSport Staff
Over 3 years ago Location: Portland, OR, USA
A: To install a spark arrestor you would need to install a Pro Moto Billet end cap which does include a spark arrestor.
DDBZZ
Q: Will the insert fit in a factory fmf shorty? for a honda cr125?
Over 6 years ago
hondarob
MotoSport Staff Expert
Over 6 years ago
A: no it is for four strokes
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