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Precious inners have been optimized to offer the best performance for comfort and outflow of the air
SW brand height adjustable Level 2 CE knee armour
Enlarged lower intake vent reduces shield fogging and increases ventilation
Green or Titanium powder coat finishes
Function consists with style
Yoshimura YZ450F 14-17/FX 16-17/WR450F 16-18 RS-4 Stainless Slip-On Exhaust, W/ Aluminum Muffler SIZE_S / M Precious inners have been optimizedYoshimura YZ450F 14 17 FX 16 17 WR450F 16 18 RS 4 Stainless Slip On Exhaust, w Aluminum Muffler The work that went into developing the RS 4 muffler has paid big dividends in Off road Racing; winning multiple Supercross and Motocross titles since it's inception. We've developed the current generation RS 4 based on that research & development, and the result is a unique design that provides an unrivaled combination of power and quiet exhaust tone. The