Barker's Full Single Exhaust System Yamaha YFZ 450 

#629.

• 
  
• 4.5 Horsepower gain
• 3.4 .ft-.lbs Torque increase
• 103 dB without the quiet core
• Pulls harder into the turns
• More pull up the face of jumps
• Improved top end pull
• Fits 2004 to 2009 models (carb systems)
• Also fits newer carb models 2012+
• Available in brushed aluminum, black powder coat, or blue powder coat can finish
• Billet clamps offered in red, black, or blue
• Optional Add Ons:  Quiet Core; Spark Arrestor; Ceramic Coating