FMF Factory Fatty Pipe

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FMF Factory Fatty Pipe
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FMF Factory Fatty Pipe

Our Price: $215.99$233.99

MSRP: $239.99 - $259.99 - You save up to $26.00 (10% off)

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Additional Videos

FMF Factory | Inside Look

FMF Factory Fatty Pipe Sound Bite W/ Q-Stealth

How to - 2 Stroke Pipe Install

RM YouTube Channel
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Details

    The FMF Factory Fatty Pipe is a 2 stroke exhaust header that takes cues from the works pipes of yesteryear, smoothing out power in a lightweight construction that pays tribute to the racers of old.

    With the Fatty Pipe expect a smooth power band devoid of spikes but with better power throughout the rev range. More low, more mid, and increased over-rev. Great for most types of riding where you want more control of your power band.

    A bare finish that shows the heat-affected weld areas is attractive and true old school. The construction is also full of old school quality with lightweight 20 gauge steel for the body and thicker 19 gauge for the header portion. And of course it has the same hand welded, hand pounded seams to increase flow..

    Specs:
  • Better power in low and mid ranges
  • Higher over-rev
  • Smooth power curve
  • Lightweight 20 gauge steel body
  • Tougher 19 gauge steel header
  • Most models include new O-rings
  • Hand welded and pounded seams
  • Made 100% in the USA
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

FMF Factory Fatty Pipe Reviews

Each review submitted enters you into a
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
 
4.8 / 5.0
40 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
34
4
2
0
0
Value
4.7 / 5
Durability
4.5 / 5
Ease of Installation
4.9 / 5
Fitment
4.9 / 5
Performance
4.8 / 5
Finish
4.9 / 5
Features
4.9 / 5
Recommend it?
Yes (34)
No (1)
Value
4 / 5
Durability
4 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
4 / 5
Recommend it?
Yes
FMF 2 Stroke Factory pipe
Great pipe. Power delivery is smooth for a 2 stroke pipe. Best pipe I have had. I like pipes with a slightly thinner metal over the thicker metals because it doesn't bend the neck into the cylinder as easily. Dents will be larger but, iIn my opinion, It is easier to remove a dent out of the pipe then realign the neck.

-m-2018 HUSQVARNA TX 300--
April 8, 2019
Phoenix, AZ, US
Age: 45-64
Purchased
1 year ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
6'1 - 6'3
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Awesome pipe that looks great!
I was skeptical at first how much I'd like this pipe, especially with the factory selection. When I had received the pipe I was thoroughly impressed with the build quality and it looked great. I did some reading, you definitely need to take care of the factory look to make it not look corroded. Overall the installation was a breeze and line up perfectly.

-m-2016 HUSQVARNA TC 85 17/14--
Look great on the TC85
Comes with a dent, but that's for fitment. Don't be worried!
Added a fatty with a turbinecore for woods and trail riding for my wife
February 17, 2019
Kitchener, ON, CA
Purchased
5 months ago
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Awesome FACTORY LOOK!
Great works look and performance, FMF is the OEM suppier for KTM.
User submitted image
Added Jan 23, 2019
January 23, 2019
Pearl, MS, US
Age: 45-64
Purchased
over 2 years ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'7 - 5'9
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Helped my sons bike tremendously!
We bought this for my son for his new 2018 yz125 and it made a huge impact. The bike has loads of more power now and has helped him get some trophies to bring home!
January 2, 2019
Seymour, IN, US
Age: 25-44
Gender:
Male
Weight:
161 - 190 lbs.
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
FMF Factory Fatty Husqvarna TC 250
Highly recommend. High quality as you would expect from FMF. Fitment is excellent and comes with header o-rings. Factory pipe does take some extra care to keep looking sharp, but well worth the time.
Care of product shipping is excellent. Fast and efficient.

-m-2018 HUSQVARNA TC 250--
2018 TC 250
2018 TC 250
December 29, 2018
Benicia, CA, US
Age: 45-64
Purchased
7 months ago
Gender:
Male
Weight:
131 - 160 lbs.
Height:
5'4 - 5'6
Value
4 / 5
Durability
4 / 5
Ease of Installation
4 / 5
Fitment
4 / 5
Performance
3 / 5
Finish
5 / 5
Features
4 / 5
Recommend it?
No
Looks Great
Looks Great, fitment was pretty good, RM service and delivery was outstanding as usual, didn't see much performance improvement over stock if any though...

-m-2016 KTM 65 SX--
November 8, 2018
Naperville, IL, US
Age: 45-64
Purchased
8 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
6'4 - 6'6
Value
3 / 5
Durability
3 / 5
Ease of Installation
4 / 5
Fitment
4 / 5
Performance
3 / 5
Finish
4 / 5
Features
4 / 5
Recommend it?
Yes
Looks nice sounds the same
did not change from stock to the fatty

-m-2017 KTM 150 XC-W (E-Start)--
October 30, 2018
Tillamook , OR, US
Age: 25-44
Purchased
9 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'4 - 5'6
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Smokers
Always have run a FMF on all my bikes and sons also. Hold up great (should run some kind of guard on all pipes) but do hold up w/o. Definitely noticed broad increases on power band!
August 16, 2018
Coatesville , PA, US
Age: 45-64
Purchased
over 2 years 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
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Have 3
Takes a bit of work to keep it nice but what doesn’t.

-m-DIRT BIKE--
August 3, 2018
E falmouth, MA, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
101 - 130 lbs.
Height:
5'1 - 5'3
Value
5 / 5
Durability
4 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
I needed it
65 pipes are pricey but aT least it's a good quality fmf
July 19, 2018
Stafford Springs, CT, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
<100 lbs.
Each question or answer submitted enters you into a:
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 11 questions Browse 11 questions and 32 answers
what is the difference between fmf fatty big bore and fmf fatty?
Dylan F on Aug 19, 2016
BEST ANSWER: The exhaust port size on the big bore will be larger. The big bore is to change the 85 into a 105cc, or supermini.
What jetting is used with this pipe on a ktm 300 or do I need to change from stock?
A shopper on Dec 24, 2017
BEST ANSWER: I would invest in the lectron and forget about it. We have ran the mukini and keihin on our race bikes and the lectron out performs both without the hassle of worrying about the weather and elevation.
Will this fit on a 2003 Yz250 with an FMF Fatty pipe installed?
Daniel D on Mar 5, 2017
FMF Factory Fatty Pipe
FMF Factory Fatty Pipe
Ricochet Offroad Skid Plate
Ricochet Offroad Skid Plate
BEST ANSWER: Have a 2002 with a factory fatty. And it fit with,no issues.
Part# 1046500034 - Cool pipe - does this pipe any type of coating to keep from rusting?
Terry K on Sep 26, 2017
BEST ANSWER: It has a thin oil spray from the factory to keep it from rusting while sitting in inventory , but once rode and washed this is gone. After every wash give it a spray with wd40 and clean with a steel whool pad and it willlook brand new every ride
Will I need to change the jetting on my 250 ktm 2017?
christopher G on Aug 26, 2018
BEST ANSWER: I purchased the Fatty Pipe for my 2017 TE300 last year when I purchased my bike and I did not have to change the jetting. I've had many rides on it without any issues. It's a nice pipe. Perfect fit.
Is it necessary to do silencer with the pipe or is it OK to get a pipe and use the Stocks silencer?
Tyler M on Feb 9, 2018
BEST ANSWER: I did both pipe and silencer not sure how it works with out silencer
Will this silencer fit an FMF Factory Fatty pipe? and what advantages/disadvantages of this combo over an FMF Fatty & Shorty silencer?
angel c on Nov 3, 2018
FMF Factory Fatty Pipe
FMF Factory Fatty Pipe
Pro Circuit Factory Sound 304 Silencer
Pro Circuit Factory Sound 304 Silencer
BEST ANSWER: I personally had major fitment issues with the pro circuit silencer on my stock pipe & a FMF Gnarly pipe a..on my 17 KTM , after having 2 more pro circuit silencers sent to me (one was an upgraded one with new measurements.) the fitment was too far off and my money was returned ..I switched to the FMF Power-core 2 and had no problems with fitment on either pipe ...nice improvement over stock silencer...do not forget that the shorty will be a good bit louder that the power core or 304 silencer , but will enhance bottom end & midrange pull due to the short canister and volume of silencer...make sure where you ride does not have strict sound regulations as the shorty may not pass..(my power core 2 passed a sound check at a enduro/fun ride event.
Will this pipe give more useable power in the low and mid range? My 2006 yz85 doesn't have a powervalve so I'd like to get a pipe to give me more power/torque in the low and mid range. Any recomendations?
Carson M on Jun 19, 2019
FMF Factory Fatty Pipe
FMF Factory Fatty Pipe
FMF Gold Series Pipe,
FMF Gold Series Pipe, "Fatty Moto"
BEST ANSWER: The FMF fatty pipe and FMF power core 2 silencer woke up my 14 YZ 250. So I'm sure it will help your YZ 85.
Will I have to get a different size jetting with this pipe for my KTM 2018 sx85?
Joe B on Sep 26, 2018
BEST ANSWER: Well you could depends where you live and have crisp you want the bike to run
What pipe guard works with this pipe? Does this pipe match the factory bends, 2014 250 XC-W?
David S on Feb 23, 2019
BEST ANSWER: These both will work for your application.

P3 Carbon Pipe Guard Stock/FMF Fatty
Fits: 2014 KTM 250 XC-W (E-Start)
Part# 1493730009

E Line Carbon Fiber Pipe Guard Stock/FMF
Fits: 2014 KTM 250 XC-W (E-Start)
Part# 1315800004
Can i get this fmf pipe fore rm 250 2008?
A shopper on May 8, 2018
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2018 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
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