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FMF Muffler Plug
FMF Muffler Plug

In Stock - Ships Tomorrow!
Item #FMF00EM

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270 Reviews
4.5 out of 5 stars
5 Star   182 4 Star   53 3 Star   20 2 Star   6 1 Star   9
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All Reviews
For the idiots

It’s for a four stroke not a two stroke but it should still say (ONLY FOR FOUR STROKES)

To large

I bought this about a week ago. Upon looking at it i immediately knew it was going to be to big i barly could fit the first ring in the silencer

Great, But Doesnt Fit

Did not fit my YZ125. Overall it was a nice quality though!

Top 500
Neat Plug

reminds me to remove it :)

Verified Purchaser

This doesn't fit in the stock exhaust of my 2018 Yamaha WR250F. I bought it because I thought the "remove before flight" tag looked cool. Turns out, it's pretty junky plastic and it has red paint chips falling off of it. It's only $5, so it's not worth returning. I guess it's going in the trash.

Verified Purchaser
Des Moines, IA, USA
Pipe Plug

Fits like a cork. Tag is basically a piece of paper so just like ecerybody else states...I’m with them about not pulling on the flag. I basically ordered this one because it was the same price as the other basic plugs but I had to see the tag for myself.

Verified Purchaser Top 500 Contributor
Hemet, CA, USA
Exhaust plug

Keeps the water out of my exhaust, work well

MotoSport Staff Expert
Portland, OR
Classic Exhaust Plug

Fairly explanatory product. Put this in the end of your four stroke exhaust to protect it from getting water in the exhaust when washing the bike. As other reviewers have indicated, the red flag is not extremely strong so do not pull on it to remove the plug. The flag is there as a more obvious reminder that you have an exhaust plug installed. How many times have you seen someone who is having a hard time start their bike when they realize the exhaust plug is still installed :) The ribs on the plug make it easy to push in and ensure you have a snug fit before washing your bike.

San Diego, CA, USA
Too Big For 65

Was way too big for my son's KX65. It does seem like a good quality rubber plug though.

Top 1000 Contributor
New England, USA
Good product

Very well constructed and adaptable to many exhaust sizes by simply trimming . Forget about pulling on the little red FLIGHT TAG to remove them from your muffler , they just rip , I think this is really just for show . I never pulled them that way . However , I did put a zip tie to hold them on , but never the less they flew away while I was transporting my bike via my pickup at highway speeds . Oh well .

See 10 More Reviews
16 Questions
Answered:   14
Not Yet:   0
Q: Will this fit my yz85 fmf shorty muffler ?
2 months 16 days ago
Q: Will this fit a 2018 KX450F stock pipe? 
Over 5 months ago
Q: Will this fit my GYTR exhaust on 2009 YFZ450R? I'm picking up a 2017 YFZ450R and I hope to get one for both bikes.
Over 6 months ago
Top 10
Over 6 months ago
A: Yes, this is a universal fitting exhaust plug that will fit a variety of exhaust sizes.
Q: Will this fit a 2007 kx100 with stock exhaust
Over 10 months ago
Top 10 Contributor
Over 10 months ago
A: Tapered rings spanning from 3/4" to 2-1/4 you may need to trim for you application.
Q: Will this fit a stock 2015 klx 110
Over 3 years ago
Expert MotoSport Staff
Over 3 years ago
A: The Tapered FMF Muffler Plug fits outlets from 3/4" to 2-1/4". I would recommend first measuring the outlet on your 2015 Kawasaki KLX110 muffler. You should have no problem.
Over 3 years ago
A: Yes it will fit your stock KLX, we use this exact plug on 2 of them .
Q: Wil this fit a 4 stroke pipe
Over 3 years ago
MotoSport Staff Expert
Over 3 years ago
A: The FMF Muffler Plug fit openings from 3/4" to 2-1/4".
Over 3 years ago
A: I have a 2005 Kx250f and it works great!
Q: Will this fit my powercore 2?
Over 3 years ago
Top 1 Contributor
Over 3 years ago
A: Yes, but it is not the best choice. You will want to look at the 2 stroke specific plugs that are smaller diameter.
Q: Will this fit a turbinecore 2 exhaust off a 2003 rm85?
Over 4 years ago
Top 50 Contributor
Over 4 years ago
A: No it will not fit, the FMF plug is for 4 strokes. You need the Bike Masters smaller 2 stroke plug.
MotoSport Staff
Over 4 years ago
A: Trimming may be required for fit with 2-stroke exhausts. For your 2003 Suzuki RM85, I would recommend the Acerbis Muffler Plug 2T/4T or the BikeMaster Rubber Muffler Plug in size small.
Q: Will this fit my Yoshimura RS-4 set up on my CRF250L?
Over 4 years ago
Expert MotoSport Staff
Over 4 years ago
A: Really this Muffler plug should fit any full size four stroke exhaust system. You should have no issues using it with your Yoshimura muffler.
Over 4 years ago
A: Yes the fmf muffler plug will fit into the rs-4 setup
Q: Would this fit a stock 2003 yz250 exhaust?
Over 8 years ago
Top 50 Contributor
Over 8 years ago
A: Yes you just need to specify when you order what bike you are ordering for and the plug will fit.
Over 8 years ago
A: Yes it will fit
MotoSport Staff Expert
Over 8 years ago
A: Yes, this will fit most 2-stroke and 4-stroke exhaust tips.
Over 8 years ago
A: Yes it should fit your bike with ease.
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# Part Numbers
Product Variant Manufacturer Part #
FMF Muffler Plug 011299
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.