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FMF 4.1 4-Stroke Muffler Race Packing

FMF 4.1 4-Stroke Muffler Race Packing
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FMF 4.1 4-Stroke Muffler Race Packing

Part# 1563760001 | Mfg Part# 015303

Our Price: $24.99

MSRP: $26.99 - You save $2.00 (7% off)

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Details

  • Comprised of fine, blended interwoven fiberglass fibers made to FMF’s specifications for high heat resistance.
  • Great sound attenuation.
  • Optimum performance and longevity.
  • Replacement packing for all 4-stroke mufflers with core up to 18" long.
  • Recommended packing for FMF Factory 4.1.
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

FMF 4.1 4-Stroke Muffler Race Packing Reviews

Each review submitted enters you into a
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
 
4.9 / 5.0
10 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
9
1
0
0
0
Value
4.8 / 5
Durability
4.8 / 5
Ease of Installation
4.4 / 5
Fitment
4.8 / 5
Recommend it?
Yes (9)
Value
4 / 5
Durability
4 / 5
Ease of Installation
4 / 5
Fitment
4 / 5
Recommend it?
Yes
The genuine FMF item works well, no need to trim it to fit and it make the muffler work like brand new again
September 3, 2019
Traralgon South, Victoria , AU
Age: 45-64
Purchased
4 months ago
Gender:
Male
Value
5 / 5
Durability
5 / 5
Ease of Installation
4 / 5
Fitment
5 / 5
Recommend it?
Yes
Used in an HMF pipe on a Raptor 700
I bought this because HMF does not make a repack kit so this is what I landed on. The main thing is that this kit is wide enough to fill the entire HMF pipe. You will have to pull on the fiber blanket to stretch it out to get it to fit the HMF pipes properly as it is a little short on width but it fit. Rolling it on tight is kind of a trick but once you get it started it gets easier and I used masking tape to hold it as I shoved it in the pipe. I would suggest wearing gloves because the fiberglass is annoying. This restored the sound quality that I had lost from and I would assume some power was regained.

-m-2007 YAMAHA RAPTOR 700--
March 26, 2019
Central Iowa, IA, US
Purchased
7 months ago
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Recommend it?
Yes
FMF 4 stroke muffler packing
The same packing FMF puts in the mufflers when they build them. Lasts as long as any packing I have used over the years. Hard to find fault in this product.

-m-2018 KTM 450 SX-F--
February 12, 2019
SoCal, CA, US
Age: 45-64
Purchased
10 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Value
5 / 5
Durability
5 / 5
Ease of Installation
4 / 5
Fitment
5 / 5
Recommend it?
Yes
Great packing
After blowing a head gasket I needed to repack my 4.1. Not to complicated to do, just needed to trim some for it to fit into my CRF150rb. A second set of hands is helpful. Now sounds and feels better.

-m-2007 HONDA CRF150R Expert--
December 30, 2018
Richlands, NC, US
Age: 45-64
Purchased
1 year ago
Gender:
Female
Value
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Recommend it?
Yes
Easy install
Very easy to install, just trim to fit the core, wrap, and insert into the can. Seems to have brought the sound down, no noticeable difference in power.

-m-2015 YAMAHA WR250F--
March 31, 2018
Marana, AZ, US
Age: 45-64
Purchased
1 year ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Recommend it?
Yes
Great packing at a great price!
I change my packing every 20-30 hours of run time and only use the race packing for my Factory 4.1 blue anodized titanium with carbon cap. I like and install the donut tube packing for the end cap that's included. When you pack for the first time the instructions are lengthy but thorough. After a few pack jobs it's a breeze. Great packing at a great price.

-m-2017 YAMAHA YZ250FX--
December 31, 2017
Jefferson , GA, US
Age: 45-64
Purchased
1 year ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Recommend it?
Yes
Great instructions
This kit makes it very easy to repack your muffler yourself. The instructions that come with it are awesome and it really makes a difference in the sound and performance of your machine.

-m-2013 KTM 450 SX-F--
November 7, 2017
Petersburg, MI, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'10 - 6'0
Value
4 / 5
Durability
4 / 5
Ease of Installation
3 / 5
Fitment
4 / 5
Recommend it?
Yes
FMF 4.1 4-Stroke Muffler Race Packing
My feed back - read the instructions first and then read them again! The instructions do not explain to place packing in the front end cap, so don't forget to pack that area. Good luck
December 2, 2016
Geismar, LA, US
Age: 45-64
Purchased
over 2 years ago
Gender:
Male
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Recommend it?
Yes
Better than the cheaper stuff
Good stuff. Last alot longer than other brands. Worth the extra money.

-m-2006 YAMAHA YFZ 450--
September 9, 2016
Broadway , VA, US
Purchased
over 3 years ago
Gender:
Male
Packing is key.
Brought my bike back to 94 db and also gave it a more throaty sound too!!
June 10, 2015
PA
Each question or answer submitted enters you into a:
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$500 gift card quarterly drawing!
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 3 questions Browse 3 questions and 15 answers
The 4.1 packing looks like it has an extra sleeve?? Is that for to go around the core then packing around that?
RONALD S on Jan 17, 2018
BEST ANSWER: You cut a pattern out of the main piece to wrap around the core and use the remaining material to go around that in the opposite direction. The little roll is to stuff down in the cone. Read the directions a couple of times until the light goes off for you. At first it was a bit confusing but once it clicked in my head it made sense.
Would this fit my fmf titanium4?
tyler c on Apr 10, 2018
BEST ANSWER: I do not believe it is the proper one. However, i have packed a few over the years with generic and/or other models packing. You can make it work, but two and four strokes use a little different type of material. Tried to link you to fmfracing site with the packing but cannot put a link here.
Hope this helps a little.
What is the main difference between the 4.1 and the 4 stroke packing? Are they really Different?
A shopper on Oct 6, 2017
BEST ANSWER: The yarn used to make the mat and the cap stuffer in this 4.1 kit are higher quality in terms of mechanical strength, corrosion resistance and temperature than more common E-glass based kits. I would expect 2-3x longer life for this kit for a four stroke app compared to a chopped E-glass mat.
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