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  • Gold Series Fatty Pipe - 025073
FMF Gold Series Fatty Pipe - 025073
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FMF Gold Series Fatty Pipe - 025073

  • Part #:
    431621
  • Manufacturer Part #:
    025073

MSRP Price: $239.99

Our Price: $215.99

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Ships Today! If ordered in:
0 1 HR : 2 0 MIN : 1 1 SEC
Overview of FMF Gold Series Fatty Pipe - 025073
  • Other manufacturers have copied Gold Series pipes but nothing beats the original
  • All Gold Series pipes are computer designed and dynotested to focus power gains where each machine needs it most
  • Every pipe goes through the Tru-Flo stamping process to ensure quality performance and optimum fit
  • Fatty pipe offers better bottom and top power
  • Improved performance, enhanced bottom end, a stronger mid-range and more peak
  • Gold Series finish and sturdy 19 gauge U.S. steel construction
  • Stronger than stock
  • The perfect pipe for all moto applications and off-road versatility
  • Nickel-plated


    • Included items:
    One nickel plated pipe
    Two pre-installed o-rings
    One instruction sheet

Specs for FMF Gold Series Fatty Pipe - 025073

Color - Primary Silver
Type Head Pipe
Units Each
Weight 5.37 lbs

Alternate/OEM Part Number(s):

18200084
Specs for FMF Gold Series Fatty Pipe - 025073
Color - Primary Silver
Type Head Pipe
Units Each
Weight 5.37 lbs
Fitment for FMF Gold Series Fatty Pipe - 025073
See if this part fits your ride

Part 431621 fits the following machines

KTM
  • 2006 KTM 125 SX
  • 2005 KTM 125 SX
  • 2004 KTM 125 SX
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4.6 / 5.0
18 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
11
7
0
0
0
Finish
5.0 / 5
Fit
4.4 / 5
Performance
5.0 / 5
Quality
4.7 / 5
Style
4.8 / 5
Value
4.7 / 5
Loudness
Very Quiet
Average
Very Loud
Fit
5 / 5
Quality
4 / 5
Style
4 / 5
Value
5 / 5
great pipe
iv had this pipe for about a year now and its the best pipe iv had, has some power gains in bottom , mid, and top end but not to much, only con is it kinda dents easy, i was going around a turn and my front tire washed out and it put about a 3.50-4 inch dent in it and i wasnt even going fast. its good for trail riding if you buy a pipe guard for it, overall its a great pipe
March 18, 2010
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
4 / 5
Nice Quality
Fit right on no hassles.Comes with O rings and jetting recomendations.Nice plated finish easy to clean.Added a little pep to engine, but still very controlled for tight woods.Im happy with the performance.
November 23, 2010
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
pipes and more pipes
This pipe is awsome for the price easy to clean and always has the shine you want it to have to make your four wheeler stand out more.
October 1, 2009
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
No Review Title Entered By User
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June 13, 2010
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
No Review Title Entered By User
No Review Text Entered By User
January 2, 2011
Finish
5 / 5
Performance
5 / 5
1987 LT250R
I have a LT250R with a 1987 motor and a 1986 frame... Pipe works great sounds great.... Only problem its a very tight fit but fits...
July 17, 2012
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
FMF Fatty Pipe
I Had a hole in my other fatty pipe and i have a 98 cylinder on top of my 01 crank accidentally orderd an 01 fatty, returned that and got my 98 within 1 day! I love my FMF Fatty it looks great and sounds good too. I highly reccomend this prodouct to all riders!
October 7, 2009
Loudness
Very Quiet
Average
Very Loud
No Review Title Entered By User
Love the fmf pipes i would recommend it to anyone!!
July 5, 2012
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
I am impressed
Pip has an amazing finish nice welds clean sound and overall a very nice pipe
February 25, 2010
Finish
5 / 5
Performance
5 / 5
So sick! Pit bike must have!!!!
Everything you'd expect from FMF in a smaller package. A huge performance boost only 4 bolts away. Way sick!
August 8, 2012
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Instructions and Manuals for FMF Gold Series Fatty Pipe - 025073