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Yoshimura RS-4D Pro Series Full Exhaust System
Yoshimura's RS-4D full exhaust system is for the rider that demands that most from his machine. This RS-4D exhaust not only increases power and is light, but it also has a lower centralized mass coefficient providing you with a bike that's better handling.
Pentagonal-shaped muffler features a carbon fiber cone end cap, two-staged stepped baffle and striking good looks
RS-4D front cap design functions as a poly-resonant chamber for a quieter muffler with improved mid to top end power
Titanium header and tail pipe
AMA Pro Racing sound insert is installed in muffler
Kit includes instructions and all required installation hardware
Fitment is guaranteed or your money back plus free return
Don't waste time installing a product that doesn't fit. We
worked hard ensuring that this product is an exact fit on the
vehicles listed below.
YZ250F 4-Stroke 2007-2013
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