Shopping CartCLOSE
  • Your cart is empty.
FMF 4.1/4.1C Quiet Core Spark Arrestor Insert
FMF 4.1/4.1C Quiet Core Spark Arrestor Insert

$35.99 $39.99
10% Off - Save $4.00

Out of Stock
Item #FMF00GJ

Read More
Write a Review
Enter to Win $500

Write your review and you'll automatically be entered in our monthly drawing. Include an image or video to DOUBLE your chances to win!

Write Your Review Write a review to win $500
9 Questions
Answered:   9
Not Yet:   0
tony
Q: I'm not sure what FMF pipe I have because the branding has been removed, it's fitted to my KLR650 and the pipe opening is 40mm, it has a hole in the same place as this insert does. Will it fit?
4 days 13 hours ago
Michael
Top 10
4 days 13 hours ago
A: If there is any type of serial number, usually on the inside of the pipe towards the exhaust port, you can contact FMF directly to find out which canister you have.
Paul
Top 10
4 days 13 hours ago
A: The slip-on mufflers recommended for the KLR650 are the Powercore 4, part number 042319, and the Quietcore 4, part number 04321.
It would be best to call FMF at (310) 631-4363 to describe the full details of your muffler, and determine which spark arrestor is correct.
Your
Q: Will this fix on my powercore 4 on my 2002 Honda xr80r
2 months 23 days ago
TylerGearhead
Top 10
2 months 23 days ago
A: No this is for the 4.1/4.1C from FMF
Drome
Q: Does anyone have install instructions for this product? thanks in advance
4 months 8 days ago
MotoSportExpert
4 months 8 days ago
A: FMF racing has the installation manuals for the pipes and inserts at the following website

http://www.fmfracing.com/ProductManuals/ProductManuals
ridgerunner
Q: What would you say would be the decibel rating. My bike is excessively loud and tracks don't like me on their tracks becuase of it. I was looking at the GYTR 4.1 because it says it meets the 95 decibel requirement. But it would be cheaper with the FMF 4.1
4 months 12 days ago
DaveGearhead
Top 10
4 months 12 days ago
A: I am still unclear as to what exhaust you are currently running on your bike. If you are running the 4.1 muffler this part should put you in around 96db.
mznickname
Q: Do you sell FMF P/N 040630?
1 year 7 months ago
MotoSportExpert
Expert MotoSport Staff
1 year 7 months ago
A: We do not carry this as a stocking item. However, we can get this for you. Please give us a call at 888-676-8853 so one of our customer service agents can help get this ordered for you!

Thanks!
Coot
Q: Will this fit a fmf powercore 4 exhaust on a warrior 350
Over 3 years ago
MotoSportExpert
Expert MotoSport Staff
Over 3 years ago
A: This Replacement Quiet Core Spark Arrestor insert is for FMF Factory 4.1 and 4.1C 4-stroke exhausts only.
joelxrxr
Q: Will this for a stock 2001 xr80r exhaust?
Over 3 years ago
MotoSportExpert
MotoSport Staff Expert
Over 3 years ago
A: No this would be a Replacement Quiet Core Spark Arrestor insert for FMF Factory 4.1 and 4.1C 4-stroke exhausts only.
Bennyboy
Q: Is the fmf part number for this item 040304?
Over 3 years ago
MotoSportExpert
Expert MotoSport Staff
Over 3 years ago
A: Yes that is correct. FMF part number 040304.
mlollar
Q: Measurements?
Over 4 years ago
HI, Can you tell me the diameter measurements of the pipe insert and also of the flange? I have a Grizzly 700 muffler that doesn't look like any aftermarket I've been able to find and it says to use YMS-02 screen type arrestor.
MotoSportExpert
Top 1 Contributor
Over 4 years ago
A: The FMF 4.1/4.1C Quiet Core Spark Arrestor Insert is made ONLY for thr FMF 4.1 exhaust systems. It is not designed for any other exhaust system. FMF does not have any product measurements for this item.
# Part Numbers
Product Variant Manufacturer Part #
FMF 4.1/4.1C Quiet Core Spark Arrestor Insert 040304
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.