FMF RACING FATTY EXPANSION CHAMBER - 024053 - YAMAHA 99-25 YZ250 / 16-25 YZ250X

Mfg Part#-024053

With well over 35 years of racing experience behind it, the Fatty Gold Series pipe delivers race proven performance. The Fatty broadens and smoothes out the power curve while boosting gains throughout the entire power band, more low-end, more mid, and increased over-rev. No matter what type of riding you do, the Fatty has the benefits you’re looking for.

-More tractable power, improved throttle control

-Provides power gains throughout entire power band

-Carbon steel with a nickel plated finish for maximum durability

-FMF Racing’s Tru-Flo stamping process ensures a perfect fit and optimum performance.

-Can be used with FMF or stock silencer (unless noted)

-FMF's most popular 2-stroke pipe 

-O-Rings Included

Fits the following models:

Yamaha

99-25 YZ250

16-25 YZ250X