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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 Fatty Pipe Sound Bite W/ Q-Stealth

How to - 2 Stroke Pipe Install

RM YouTube Channel


    Pay tribute to the racers of old with the FMF Factory Fatty Pipe for exhaust that takes its cues from the works pipes of yesteryear.

    With the FMF Factory Fatty Pipe you can expect a smooth power band devoid of spikes but with increased output throughout the rev range. More low. More mid. Increased over-rev. Great for whatever type of riding you do. With the bare finish the Factory Fatty is true old school, made from lightweight 20 gauge steel for the body with thicker 19 gauge for the header portion. And of course it has the same hand welded and pounded seams to increase flow, just like other FMF pipes. Not to mention the Factory Fatty looks amazing.

    So snag a blast from the past with a dash of modern performance with FMF’s Factory Fatty Pipe for some old school braap in your ride.

  • 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 O-rings
  • Hand welded and pounded seams

FMF Factory Fatty Pipe Reviews

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0 of 0 people found this review helpful.

Factory performance and looks

Comments On Oct 24, 2015:I bought this FMF Factory Fatty to replace the stock ugly pipe and to increase horsepower & torque. In raw form this pipe looks amazing. It bolted up with zero issues and was a perfect fit as expected. On the track this pipe doesn't produce as much low end as the stock pipe but picks up in the range a lot better then the stock pipe. Mid range power was increased and the top end had plenty of power and over rev on tap whereas the stock pipe went flat. Throttle response was greater as well. Very happy with this product. Just be sure to spray it down with WD40 to keep the rust off and looking like new.

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0 of 0 people found this review helpful.

2000 YZ250 with 300 big bore

Comments On Jan 27, 2015:Love the look of the factory finish pipes and as always FMF makes quality products. The pipe bolted right up and seems to compliment the power of my yz300 very well. Only downside to the factory raw finish is keeping it clean and oiled to keep it from rusting. However don't let that make you decide against it...grab some light scotch brite pads and some oil or wd40 and it cleans right back up.

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