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Yamaha YFZ 450R | Full Exhaust (Carbon Fiber discontinued)

  • Yamaha YFZ 450R | Full Exhaust (Carbon Fiber discontinued)
  • Yamaha YFZ 450R | Slip-On Exhaust | Performance Series
  • Yamaha YFZ 450R | Full Exhaust | Performance Series
  • Yamaha YFZ 450R | Slip-On Exhaust | Blackout
  • Yamaha YFZ 450R | Slip-On Exhaust | 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

Also Fits X Model Yamaha was the first manufacturer in the 450 sport quad market and HMF has been tuning it since day one. Whether you are a weekend warrior trail rider or a pro class racer, HMF has an exhaust that fits your power needs. You can expect a 16% horsepower gain with our full system and proper fuel tuning.

Fits: (09-19) 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.

Mode 1 Mode 2 Mode 3 Mode 4 Mode 5 Mode 6
            
4.0 4.0 4.0 4.0 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.

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