FMF's Gold Series Pipe "Fatty Moto" is one of their most popular pipes because it provides a smooth power band, increases in power all along the curve, and better control regardless of where you are in the power band.


Unusable peaks in power will be leveled out and more power in the lows and mids will be added. The top end doesn't suffer since all the original punch is maintained along with more over-rev. That means more fun all around no matter the type of riding you like.



  • Improved power throughout band
  • Increased over-rev
  • Smooth power delivery
  • Carbon steel body with nickel plating prevents corrosion
  • Tru-Flo stamping process ensures proper contours and fitment
  • Most models include new O-rings
  • Made 100% in the USA


Yamaha YZ 250 Compatible Years:

  • 1985 through 2020

FMF Gold Series Pipe, "Fatty Moto" Yamaha YZ 250

SKU: 20124
  • About Our Parts

    We have all NEW, Genuine OEM, NOS, vintage and obsolete parts. Therefore, we cannot guarantee availability on NOS or obsolete parts.


    However, if there is an obsolete or hard to find part that you are looking for, that is not listed on our website, please email us and we will most likely be able to get it for you.

  • Shipping and Deliveries


    All in stock merchandise will typically ship within 3-5 business days, after purchase date. *unless otherwise noted on the product detail page or stated via phone/email*



    Most orders will be delivered between 3-5 days, after your item(s) have been shipped! *depending on delivery option choosen at checkout* 

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