- OR -

Yamaha YFZ 450R | Competition Series

  • Yamaha YFZ 450R | Competition Series
  • Yamaha YFZ 450R | Competition Series
  • Yamaha YFZ 450R | Competition Series
  • Yamaha YFZ 450R | Competition Series
  • Yamaha YFZ 450R | Blackout
  • Yamaha YFZ 450R | Full Exhaust | Blackout
  • Yamaha YFZ 450R | Blackout
  • Yamaha YFZ 450R Exhaust | Slip-On Black
  • Yamaha YFZ 450R | Blackout Head Pipe
  • Yamaha YFZ 450R Exhaust | Slip-On Black
  • Yamaha YFZ 450R Exhaust | Slip-On Black
  • Yamaha YFZ 450R Exhaust | Slip-On Black

Yamaha® YFZ 450R-X

The Yamaha® YFZ 450R/X is available as a Slip-On or Full System in the Performance and Competition exhaust series.  The Competition full system picked up roughly 6 more horse power and 4lbs of torque.  The Performance Series is available in manufacturers colors, and Competition exhaust includes 3 removable inserts to adjust power and sound levels according to your riding area.  

Fits: (09-20) YFZ 450R, YFZ 450X

Fuel tuning is required learn more

Fuel Tuning is absolutely required when installing an HMF Exhaust on this machine. Failure to tune the engine can cause excessive damage to the exhaust system and engine, while voiding the warranty on your exhaust and possibly on your machine. (check with local dealer). See the tuning settings below for the proper fuel tuning solution on your machine.

Exhaust Systems

Yamaha® YFZ 450R-X ATV Accessories

Tuning

Fuel Tuning is absolutely required when installing an HMF Exhaust on this machine. Failure to tune the engine can cause excessive damage to the exhaust system and engine, while voiding the warranty on your exhaust and possibly on your machine. (check with local dealer). See the tuning settings below for the proper fuel tuning solution on your machine.

NOTE: Optimizers purchased & programmed prior to July 2019 are mapped with all modes at 4.0.  The settings shown below reflect tuning with different base settings, do not adjust pre July 2019 Optimizers to the settings below.

The settings below work best with the airbox lid removed.  

Mode 1 Mode 2 Mode 3 Mode 4 Mode 5 Mode 6
            
4.0 4.0 2.0 0.0 4.0 4.0

Low Speed Fuel

Going down on the number scale will reduce low speed fuel. Going up on the number scale will increase low speed fuel.

Mid Range Fuel

Going down on the number scale will reduce mid range fuel. Going up on the number scale will increase mid range fuel.

High End Fuel

Going down on the number scale will reduce high end fuel. Going up on the number scale will increase high end fuel.

Green Lower Switch Point

Going down on the number scale will turn green mode on earlier. Going up on the number scale will turn green mode on later. These modes typically will not need adjusted from their base setting.

Yellow Lower Switch Point

Going down on the number scale will turn yellow mode on earlier. Going up on the number scale will turn yellow mode on later. These modes typically will not need adjusted from their base setting.

Red Lower Switch Point

Going down on the number scale will turn red mode on earlier. Going up on the number scale will turn red mode on later. These modes typically will not need adjusted from their base setting.

Optimizer Help

Click here to watch our HMF Optimizer tuning and installation video.

Hook me up! Get 10% off your next exhaust or equipment order.

Sign up for the HMF Community and receive the following perks:

  • 10% off your next exhaust or equipment purchase
  • Details about upcoming HMF products
  • Exclusive product giveaways
Sign Me Up!

No, thanks. I'll pay full price for my powersports needs.