The Factory Fatty is reminiscent of the “works” or cone pipe once used by Factory Teams. It shares many of the same characteristics with its’ craftsmanship and material quality. The Factory 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.

-Lighter 20 gauge steel used for the body of the pipe.

-19 Gauge steel used for the header portion.

-Includes O-rings on most models

-Hand pounded seams for smooth flow transitions.

-O-Rings Included


The FMF Power Core 2.1 silencer is one of FMF’s most popular silencers on the market today. The Power Core 2.1 silencer is lightweight and easy to perform maintenance on by using the removable bolts to break it down. The FMF Power Core 2.1 Silencer is designed to perform well in all conditions, and also provides performance enhancements while reducing noise output.
*Power core silencers give your machine a deep works-like tone with optimum performance.
*Constructed of T-6 grade 6061 aluminum that can be easily repacked without any special tools.

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