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Yamaha WR400F 1998 to 2000
Kit comes with two sets of pulling arms: 2-3/4" and 4-1/2"
Fitment: Kawasaki KX450F 2018 to 2020
or according to one’s personal preference
The RS-4 features a Polyresonant duplex chamber and two-staged stepped baffle for increased performance
Yoshimura RS-4 SS Muffler 2011-2015 KTM 250-500 | 263502D32 Exhaust Accessories Yamaha WR400F 1998 to 2000Fitment KTM 250SX F 2011 2015 KTM 350EXC F 2011 2015 KTM 350SX F 2011 2015 KTM 350XC F 2014 2015 KTM 450SX F 2011 2015 KTM 450SX F FACTORY EDITION 2012 KTM 450XC F 2013 2015 KTM 450XC W 2012 2015 KTM 500EXC 2012 2015 KTM 500XC W 2012 2015 *FITMENT NOTE: This system fits 350EXC F and 500EXC only when license plate and turn signals are removed. The work that went into developing the RS 4 muffler has paid big dividends in Off road Racing; winning
