AVGASSYSTEM

The Factory Fatty is reminiscent of the “works” or cone pipe once used by Factory Teams and it shares many of the same characteristics with its craftsmanship and material quality
Broadens and smooths 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
Hand pounded seams for smooth flow transitions

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MC 50 2021-2023

Computer designed and dyno tested to make power gains where each machine needs them the most
Tru-Flo stamping process ensures a perfect fit and optimum performance
Constructed of strong 19-gauge steel with a nickel-plated finish

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MC 50 2021-2023

The most popular 2-stroke silencers in FMF's arsenal
The elliptically shaped bodies with perforated core perform well in any condition
Equipped with a Performance Flow end cap and nickel-plated front stinger

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MC 50 2021-2023

The straight through design of the spark arrestor canister and the performance flow stainless steel end cap ensures strength, durability and most importantly, track and trail proven unrestricted power
The 2.1 utilizes a shape inspired by the 4.1 system
Utilizes exclusive FMF "Turbine Dampening System"
U.S. Forest Service legal status

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MC 50 2021-2023