Fatty 021044 YAMAHA-YZ250FX-2021 the PowerBomb is a “pre-muffler”

the PowerBomb is a “pre-muffler” of sorts which helps to lower the bikes sound output by providing more sound absorbing surface area for the sound medium (exhaust gases)

The all new PowerCore 2

Forest legal status

the TurbineCore 2

Fatty 021044 YAMAHA-YZ250FX-2021 the PowerBomb is a “pre-muffler”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 youre looking for. More tractable power, improved throttle control Provides power gains throughout entire power band