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BikeMaster Rubber Muffler Plug
BikeMaster Rubber Muffler Plug

$4.19 - $5.18

Description See Also: 37 Reviews 10 Questions Part Numbers
Item #BMS007E

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37 Reviews
4.5 out of 5 stars
5 Star   26 4 Star   6 3 Star   3 2 Star   2 1 Star   0
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All Reviews
Verified Purchaser Top 1000
Kansas City, Mo.
Exhaust plugs

These fit perfectly in my 18 Crf450r stock exhaust.

Verified Purchaser
Seaside, OR
Can't go wrong

I had to snip off the first 2 or 3 ribs before it fit in my turbinecore2.
Works fine though.

Verified Purchaser
Concord, NC, USA

Check your exhaust size and go for it.

Verified Purchaser Top 100
League City, TX
Gets the job done

I use this in our 2 strokes since they have the smaller diameter silencers. I just wish it was a softer rubber compound like the FMF version I use on my 450.

Verified Purchaser
Chicago, IL, USA
Works great

Fits the FMF Shorty silencer on my 01 cr250 just fine. Keeps the moisture and crud out of my exhaust and gives me peace of mind.

Scotland
Muffler plug

Although this plug is hard it still fits in my 525, I have a smaller one for my 125 but they both fit and work perfectly for when washing my bikes and keep the water out of the exhaust

Verified Purchaser
Seattle wa
To hard

They are to hard so they don't stay in the exhaust

Verified Purchaser
Great fit

Perfect for Ride Red CRF,s Duel exhaust

Atlanta, GA, USA
By the small for 2 stroke and large for 4 stroke

As the title says and also if you have a spark arrestor you will need to trim off some in order for it to work but that is easily done with scissors or knife. works as advertised.

Verified Purchaser
Michigan
Good for 2 strokes

Fits a yz250 pro circuit silencer well. I think it would
Fit most 2 stroke mufflers.

See 10 More Reviews
10 Questions
Answered:   10
Not Yet:   0
Jakes 250
Q: Will the large one fit in my HMF performance serious exhaust good?
1 month 24 days ago
JamesGearhead
Top 10
1 month 24 days ago
A: Yes, this will work on your HMF Exhaust. These plugs are pretty generic, meaning they will fit a variety of exhaust sizes.
nevan
Q: Will it fit my 02 honda 100 with a fmf power core 4
Over 5 months ago
robert
Top 10 Contributor
Over 5 months ago
A: You will want the large one for four stroke applications.
JJMonaco
Q: Would th small or large fit my Kawasaki 140L?
1 year 5 months ago
MotoSportExpert
MotoSport Staff Expert
1 year 5 months ago
A: Small would be best for the Kawasaki 140L.
HansAB
Q: I have barker exhaust on a kfx450r will the large fit? The opening is rather oval shaped.
2 years 1 month ago
MotoSportExpert
Expert MotoSport Staff
2 years 1 month ago
A: Unfortunately we do not have a list of exhaust outlet diameters. I suggest measuring your muffler outlet and comparing to the plug sizing.

Small:
Minimum diameter of 14.75 mm / maximum diameter of 37.75 mm.

Large:
Minimum diameter of 33 mm / maximum diameter of 61 mm.
Honda23
Q: What is wrong with my exhaust/Dirt Bike?
2 years 10 months ago
I had just bought this product about two weeks ago and place it in my exhaust when I am not riding. I went to ride my dirt bike and when I started it took about 7-10 tries to start it up. It usually does this, but it is probably me because I am still kinda learning how to start it properly with giving just enough throttle. After 5 seconds of it running I see smoke coming from between the engine and the Fatty Pipe. So I turn it off right away and see I still have my muffler plugged in. I have a 1997 Honda CR125 2-Stroke and I am used to it smoking a little because it's a 2-Stroke, but now it's smoking a lot. It also leaks exhaust oil between the Engine and the Fatty Pipe, and also between the Fatty Pipe and the Muffler. I rode it a little on our property and realized it has lost a lot of power now and it shuts off when I hold in the clutch to brake. What is wrong and what would I need to do to fix these two problems?
Jigger
2 years 10 months ago
A: I can't tell you exactly what the problem is. But if I were you, I would go find a near by magazine rack and pick up a copy of ATV rider and look for the section called (ask Mikey). Several people send him questions about mechanical issues with their machines and he has a very good reputation for giving good advice on making repairs. You are probably not the first person to have that happen to that particular bike. Hope that this is helpful. Good luck!
MotoSportExpert
Expert MotoSport Staff
2 years 10 months ago
A: It sounds like your 1997 Honda CR125 is running rich. I would check your jetting and fuel pre mix ratio. Pull the spark plug out and see how it looks. How many hours are on the top end of your CR125? Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
JesusM
Q: What size would fit on the Honda CB300F ?
Over 3 years ago
MotoSportExpert
Top 1 Contributor
Over 3 years ago
A: The CB300F is a 4 stroke engine, thus select the 4 stroke plug. It will fit best for your machine.
Charlie
Q: Will the plug fit my 03 kx 125 pro circuit platinum silencer
Over 3 years ago
MotoSportGrantK
MotoSport Staff
Over 3 years ago
A: Yes, you will want to go with the size Small BikeMaster Rubber Muffler Plug for your 2003 Kawasaki KX125.
KRUSHER
Top 250 Contributor
Over 3 years ago
A: I can't promise it will but I'd bet on it. Mine is a large for a yz450f with Dr D exhaust and it fits it like it was made for it, and they have quite a lot of notches to be very universal
crf250man
Q: Which one?
Over 4 years ago
I have a 2014 crf250r with the dual exhaust. The holes on it I believe are smaller than a single exhaust. Should I get the big muffler plug or the small one?
MotoSportGrantK
MotoSport Staff
Over 4 years ago
A: For your 2014 Honda CRF250R with the dual exhaust you can go with the large but may have to trim to fit so I would recommend going with the small.
Ryan66
Q: It doesn't seem like it seals my stock YZ125 exhaust. It wiggles around. Is that normal?
Over 4 years ago
When i put the plug in my 2012 Yamaha YZ125 stock exhaust it seems like it goes half way in but yet I can still wiggle it around alot. Is that how its suppose to be or is it not sealing properly?
BikeMaster Rubber Muffler Plug
KRUSHER
Top 250 Contributor
Over 4 years ago
A: You need to twist it as you push it in or it won't go in as far as it should, just twist and push. You'll know once it seals because it won't budge. At least mine doesnt, same to get it out, twist and pull
MotoSportRyanT
MotoSport Staff Expert
Over 4 years ago
A: For that Yamaha YZ125 you should be using the Small Sized muffler plug. Yes because of the way the plug is made you are going to be able to move it around when it is in the muffler. If the plug is inserted as far as it can go the "ridges" on the plug should seal out any water or debris when washing your bike.
cr85tamer
Q: Would the small fit a procircuit r304 silencer the fmf does not??
Over 5 years ago
jamie
Top 250 Contributor
Over 5 years ago
A: yes, that is the brand of silencer we bought this plug for. as long as it's a 2 stroke application of course
MotoSportExpert
MotoSport Staff
Over 5 years ago
A: The small is designed for 2 stroke silencers so it will fit your Pro Circuit R304 no problem.
# Part Numbers
Product Variant Manufacturer Part #
Large FHM028L
Small FHM028S