FMF Powercore Quiet Core Insert

FMF Powercore Quiet Core Insert
FMF Powercore Quiet Core Insert
  • Description
  • Reviews (0)
  • Q&A (12)
  • Fitment

Take the noise out of riding, not the fun!

  • For use on the Following FMF exhausts: Titanium Powercore, Powercore 4, and Q4.
Total Questions (12)
Questions with answers:
Questions without answers:
exstreme Location: hemet
1-10 of 12
coleman Over 11 months ago
FMF part number?
Is this item manufacturers part number 040671? If not which insert has that part number?
MotoSport Staff Expert
Over 11 months ago
No. FMF part number 040671 can be found here:
yamahattr230 1 year 10 months ago
Will this product work with the powercore 4 that goes on my klx 140L?
Expert MotoSport Staff
1 year 10 months ago Location: Portland, OR, USA
No. The FMF Powercore for your Kawasaki KLX140L would be considered a "Mini" Powercore. This Quiet Core insert would only work with the FMF Powercore Muffers for full-sized 250/450 motocross bikes.
joker260 2 years ago
Works with spark arrestor?
Does this insert work in addition to the spark arrestor on the powercore 4 or does the quiet insert replace the spark arrestor. If it does replace the spark arrestor, is there still a screen in it to prevent sparks?
MotoSport Staff Expert
2 years ago Location: Portland, OR, USA
The quiet core would replace the spark arrestor insert so there is really not a way to run them together in the Powercore 4 exhaust. I would have to recommend looking into the FMF Q4 exhaust if you needed a quieter exhaust with a spark arrestor as well.
Dave 2 years 4 months ago
Needing allen screws to hold insert in.?
What size & are they available?
MotoSport Staff
2 years 3 months ago Location: Portland, OR, USA
Unfortunately that screw is not readily available for purchase through our books. For this specific item you can call FMF directly at 310-631-4363. The screw can also be obtained from a local hardware store. Its an m5x10 screw.
exstreme Over 5 years ago Location: hemet
Will this fit a 2010 rmz 450 suzuki stock exaust?
will this fit a stock 2010 suzuki rmz 450 exaust?
MotoSport Staff
Over 5 years ago Location: Tualatin
no this will not fit your stock exhaust
Ruger Over 5 years ago
New DB law in Colorado Will this fit stock exhaust 06 CRF250R?
Expert MotoSport Staff
Over 5 years ago
it will only work on a fmf exhaust.
Lonski Over 6 years ago Location: Western Australia
I have a FMF TI Powercore exhaust with header and megabomb - it is too loud - how can i quiet it down to around 96dB???
08 KLX450. I also have what looks like a FMF quiet core insert but have pulled the muffler apart and it will not fit. I can take a photo of the exhaust and the insert if you like but the insert looks the same as the pictures i see on all web pages.
Over 6 years ago Location: cream ridge, NJ
^^^you may have bought the fmf quiet core for the ti4/factory4. it looks the same but has a different diameter. i have the insert installed on my 04 crf 250s powerbomb and factory 4 systme and it quieted it down substancially. i dont know the exact dB but it passes tech inspection for ecea hare scrambles, works! they sell the quiet core for your exhaust, so it you want to spend the $25 its worth it.
TrailKing150 Over 6 years ago
Will this work on a Factory 4.1 Titanium system?
MotoSport Staff Expert
Over 6 years ago Location: Portland, OR
Sorry this quiet insert will not fit the 4.1 systems. At the moment FMF has not release one yet. They've listed it as TBA.
themxer Over 6 years ago
Spark arrester?
does this come with a spark arrester
MotoSport Staff
Over 6 years ago Location: Tualatin
no this is just a quiet insert, you would need to purchase the Ti Powercore spark arrester screen separately.
Over 6 years ago Location: Arkansas
Mine actually did come with a spark arrestor screen in it. FMF may have updated it more recently to have one
113buckylasty113 Over 6 years ago
Can this insert fit on an mdk speed exaust by fmf 4.1 duel?
i have a crf250r 2008 and i need to quiet this bike down for the woods. also does this insert have a spark arrestor?
MotoSport Staff
Over 6 years ago Location: P+RTLAND
Yes, this will fit the dual MDK exhaust and it does have a spark arrestor.
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