Yoshimura RS-4 Comp-Series Full System - Aluminum Muffler 234700D320 YAMAHA Brand: YOSHIMURA Vehicle Type: Dirt Bike  Color/Finish: White Material: Aluminum Fitment: 2012/Yamaha/WR450F^^2013/Yamaha/WR450F^^2014/Yamaha/WR450F^^ Selling Unit: Each Weight: 11.88