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FMF Fatty Pipe - 2-Stroke
FMF Fatty Pipe - 2-Stroke

$206.99 - $386.99
10% Off - Save up to $43.00
Rating: 4.7 out of 5 stars

Quantity

Item #FMF001X

166 Reviews

4.7 out of 5 stars
  •   137 reviews
  •   21 reviews
  •   3 reviews
  •   2 reviews
  •   3 reviews

All Reviews

Michael

3 months 2 days ago Roanoke, VA
5 out of 5 stars
Durability
5/5
Ease of Installation
5/5
Performance
5/5
Power
5/5
Style
5/5
Nice look

Purchased for my son for Christmas. Also worked well with the shorty pipe. Great look, good sound, and easy to install!

Banksb

Verified Purchaser
3 months 13 days ago Nampa, ID
5 out of 5 stars
Durability
5/5
Ease of Installation
5/5
Performance
5/5
Power
5/5
Style
5/5
Perfect fit

Great pipe.

Russell

Top 1000 Verified Purchaser
4 months 26 days ago Paragon, IN.
5 out of 5 stars
Durability
5/5
Ease of Installation
5/5
Performance
5/5
Power
5/5
Style
5/5
Super Value

When I need to replace my bikes pipe I stick with a high performance unit like FMF.

Jake

Over 6 months ago New York,NY
5 out of 5 stars
Durability
5/5
Ease of Installation
5/5
Performance
5/5
Power
5/5
Style
5/5
Great Pipe

Will this look better sound better or rust less than the factory shorty on a 201 yz 80

JB300

Over 7 months ago
5 out of 5 stars
Durability
5/5
Ease of Installation
5/5
Performance
5/5
Power
5/5
Style
5/5
For 17 Ktm 300xcw

Awesome pipe, slightly lighter than oem pipe, mimics oem pipe power delivery but a little more everywhere especially up top and pulls harder, longer.

Alex

Verified Purchaser
Over 8 months ago Bay Area
5 out of 5 stars
Durability
5/5
Ease of Installation
5/5
Performance
4/5
Power
4/5
Style
5/5
Perfect fit

Easy! Perfect fit.

Tomtom

Verified Purchaser
Over 8 months ago Washington
5 out of 5 stars
Durability
4/5
Ease of Installation
2/5
Performance
5/5
Power
5/5
Style
5/5
Nice fitting pipe

Very nice looking, the fit was a tight one but it will make it

My name Jef

Verified Purchaser
Over 9 months ago Fresno
5 out of 5 stars
Durability
5/5
Ease of Installation
5/5
Performance
5/5
Power
5/5
Style
5/5
Fit perfect

Fit perfect. If you don't have a spring puller, I suggest using vice grips for the springs.

Kx_nick

Over 9 months ago Huntington Station New york
4 out of 5 stars
Durability
5/5
Ease of Installation
5/5
Performance
5/5
Power
5/5
Style
5/5
2018 Yz125

Pipe looks sounds and performs awesome! A little rust inside the chamber but thats not the reason for 4 stars. The pipe has 2 mounting points. 1 point does not have threading so it is only held on by one bolt and the springs. Other than that its great paired with a pro circuit r304 shorty!

Power Curve mx

Top 100 Verified Purchaser
Over 9 months ago Nj
4 out of 5 stars
Durability
4/5
Ease of Installation
5/5
Performance
4/5
Power
4/5
Style
5/5
Finish is awesome!

Great look & this pipe fits great and has awesome power gains

106 Questions

  • Answered:   96
  • Not Yet:   9

Question asked by Gavin 38

Question: Does this have the home for the vacuum tube, i am outing this on a 65 and the 2014 needs a hole for the vacuum
Question asked 13 days ago

Question asked by Mike

Question: Will the FMF Fatty pipe work with the stock silencer or do I need to purchase a that also. 2006 Suzuki jr50
Question asked 1 month 23 days ago

Question asked by Sraver

Question: Does this come with exhaust springs? Do I need them for A 2008 KTM105? 
Question asked Over 8 months ago

Question asked by Austin

Question: Will this pipe fit my 1986 yz 490
Question asked Over 9 months ago
Question answered by DaveGearhead
User's contributor status: Top 10
Question answered Over 9 months ago
Answer: Yes. Enter the year, make, and model of your machine into our website to ensure proper fitment.

Question asked by Ashton

Question: I have a 86lt250r motor on a 87 frame will this exhaust sit flush on the frame and line up even or would I have to make modifications 
Question asked Over 9 months ago
Question answered by Michael
User's contributor status: Top 10
Question answered Over 9 months ago
Answer: You will not be able to use this on your vehicle.

Question asked by Ethantaylor56

Question: Is there supposed to be a dent in the fatty pipe on the back side
Question asked Over 9 months ago
Question answered by Chowe
User's contributor status: Top 25
Question answered Over 9 months ago
Answer: Yes generally speaking a clearance dent is normal to have no matter if you are purchasing a FMF, Pro Circuit, or Bills pipe. If you have any questions or concerns give us a call at 1-888-676-8853

Question asked by Dean the green been

Question: Would this pipe fit a 2001 yz125.
Question asked 1 year ago

Question asked by Blazer

Question: Is the shape of the pipe close to the stock shape of my 2018 KTM 150xcw's pipe. Wondering if my pipe guard would swap over. Also if i bought the shorty slip on would it fit
Question asked 1 year 3 months ago
Question answered by DaveGearhead
User's contributor status: Top 10
Question answered 1 year 3 months ago
Answer: Your OEM guard is not likely to fit on any aftermarket header, and yes, the shorty muffler will work for you.

Question asked by Donnys13

Question: Will this fit a fmf isde on a 99 cr250
Question asked 1 year 3 months ago
Question answered by Paul
User's contributor status: Top 1
Question answered 1 year 3 months ago
Answer: The FMF Fatty Pipe for the 1999 CR250 has the same dimensions at each end as the original Honda pipe, so that it will accept either the original Honda silencer or an FMF Silencer.
If your FMF ISDE silencer fits your Honda pipe, then the FMF Fatty Pipe will fit your FMF ISDE silencer .

Question asked by Jamie

Question: What is the difference between the Factory Fatty and the plain Fatty pipe ?? My daughter has a 2006 105sx I have installed an aftermarket CDI ignition module and a FMF silencer with spark arrestor muffler and also a 13T front sprocket the top end was also
Question asked 1 year 4 months ago
Question answered by Dan Gearhead
User's contributor status: Top 25
Question answered 1 year 4 months ago
Answer: The Factory Fatty is a "factory" style race pipe, it is made of thinner gauge steel to save weight and is not nickle-coated like the regular Fatty.
1 - 10 of 106

Fitment

See all bikes that this part fits...

# Part Numbers

Product Variant Manufacturer Part #
FMF Fatty Pipe - 2-Stroke 020375, 021036, 021048, 021021, 020378, 020020, 021006, 021040, 021052, 021000, 021031, 021044, 023049, 025073, 025119, 025130, 025069, 025006, 025060, 025091, 025088, 020050, 022048, 022003, 020054, 022015, 022040, 022052, 020045, 022000, 022060, 022006, 022034, 024023, 023055, 020107, 023006, 023018, 023059, 023000, 020133, 024041, 024049, 020147, 024053, 020149, 020138, 024000, 020006, 020014, 020015, 020017, 020018, 020048, 020034, 022044, 020037, 020039, 020042, 022012, 020124, 020127, 020130, 020143, 020142, 020135, 024034, 020137, 020145, 020150, 020087, 023037, 020088, 020089, 020092, 020104, 020105, 020109, 020390, 025019, 025052, 025040, 025151, 021058, 025092, 025150, 025159, 025182, 025197, 025202, 025221, 024068, 024072, 025238, 025241, 025263

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.