FMF Factory Fatty Pipe

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FMF Factory Fatty Pipe
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FMF Factory Fatty Pipe

Our Price: $206.99$224.99

MSRP: $229.99 - $249.99 - You save up to $25.00 (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

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

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
27 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
23
3
1
0
0
Value
4.8 / 5
Durability
4.6 / 5
Ease of Installation
4.9 / 5
Fitment
4.9 / 5
Performance
4.9 / 5
Finish
4.9 / 5
Features
4.9 / 5
Recommend it?
Yes (22)
Value
5 / 5
Durability
5 / 5
Ease of Installation
4 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Best 2 stroke pipe on the market
The quality and finish on these are awesome. My son rides a KTM 85SX and this just completes his bike. He can notice the difference in power and loves having a stronger mid to top end. Do yourself and your hands a favour and buy some decent spring pullers though.
February 21, 2018
Greenwith, South Australia, AU
Age: 25-44
Purchased
3 months 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
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Grey pipe
Really smoothed out the power on my 300. Glad I bought the fatty for this particular bike
February 2, 2018
Lubbock, TX, US
Age: 25-44
Purchased
1 month ago
Gender:
Male
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
Well worth the money
This pipe and silencer made i huge difference in the perfomance of my 300 KTM , never had a pipe make so much of a change to a motorcycle ever. it performd just like they basid it would . i would highly recomend this to anyone who rides a 300 KTM.

-m-2015 KTM 300 XC-W (E-Start)--
January 26, 2018
Puyallup, WA, US
Age: 45-64
Purchased
1 month 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
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
LOVE
Looks super cool and adds a lot to the bike! Love love love it

-m-2017 KTM 300 XC--
December 14, 2017
Reeds spring, MO, US
Age: 15-24
Purchased
2 months ago
Gender:
Male
Weight:
251 - 280 lbs.
Height:
6'1 - 6'3
Value
4 / 5
Durability
4 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Great pipe
Looks awesome. The power is smoother, maybe a little more on top too. Great pipe, also added the powered 2.1 work great together.
User submitted image
Added Nov 3, 2017
November 3, 2017
Toledo, OH, US
Age: 15-24
Purchased
5 months ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
6'1 - 6'3
Value
4 / 5
Durability
4 / 5
Ease of Installation
5 / 5
Fitment
4 / 5
Performance
4 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
It works
Good

-m-2017 KTM 150 XC-W (E-Start)-- what can I say it works great I don’t have anymore so I am just using up the 50 characters that are requested to me to enter this contest
September 19, 2017
Easton, PA, US
Age: 45-64
Purchased
5 months ago
Gender:
Male
Weight:
191 - 220 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
Made more bottom end hit for sure!
Sounds amazing! Definitely has more power now and the look is killer!
September 19, 2017
Austin, TX, US
Age: 25-44
Purchased
5 months ago
Gender:
Male
Value
5 / 5
Durability
4 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
4 / 5
Recommend it?
Yes
FMF pipe
The Fatty is more for open desert
installation is simply
The finish is first class
September 17, 2017
San Diego , CA, 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
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
FMF Fatty is worth it
Noticeable power increase on bottom and love the sound.

-m-2014 KTM 300 XC-W (E-Start)--
August 8, 2017
Royal Palm Beach, FL, US
Age: 45-64
Purchased
7 months ago
Gender:
Male
Weight:
221 - 250 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
Nice finish and noticable power increase
Looks great and was super easy to install. Capped it off with the shorty. Had noticeable power increase throughout the power range, and really brought the bike to life after some jetting.

-m-2005 YAMAHA YZ125--
July 31, 2017
Lethbridge, AB, CA
Age: 25-44
Purchased
7 months ago
Gender:
Male
Weight:
131 - 160 lbs.
Height:
5'10 - 6'0
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 5 questions Browse 5 questions and 15 answers
what is the difference between fmf fatty big bore and fmf fatty?
Dylan F on Aug 19, 2016
BEST ANSWER: Big bore is designed to run with over bore motor. "85cc that is now a supermini "
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: i would say yes but i didnt put it on my 2003 i put it on my 2014 yz 450
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
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
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: According to FMF all their pipes are designed to run on factory jettings
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