HMF Racing Yamaha YFZ 450R-X- Competition-Series Full System 09-21

The Yamaha YFZ450R-X exhaust systems are available in a Slip-On or Full System in the Performance and Competition series. HMF exhaust on the YFZ450R-X platform is used worldwide by both professional racers and recreational riders alike who are looking for even more performance out of their ride.

Performance Series
Slip-On
The single 4” aluminum silencers picks up about 5 hp and 3 ft-lbs with a significant increase in sound and much better tone than the stock exhaust. Available in multiple colored shells and end caps to match or compliment the factory colors this system is significantly lighter than the stock silencer and includes the HMF silencer, hardware, and mid-pipe to connect to the factory headpipe.
Full System
The single 4” aluminum silencers picks up about 6 hp and 4 ft-lbs with a significant increase in sound and much better tone than the stock exhaust. Available in multiple colored shells and end caps to match or compliment the factory colors this system is significantly lighter than the stock system and includes the HMF silencer, hardware, and headpipe. The HMF headpipe has built in mounts to utilize the factory heatshield or other heatshields using the same bolt pattern as the factory.

Competition Series
Slip-On
The single 4” aluminum silencers picks up about 5 hp and 3 ft-lbs with a significant increase in sound and much better tone than the stock exhaust. The Competition Series comes with 3 different inserts to adjust the sound levels and power according to the riding area, restrictions, and rider preference. Significantly lighter than the stock silencer the HMF slip-on includes the HMF silencer, hardware, and mid-pipe to connect to the factory headpipe.
Full System
The single 4” aluminum silencers picks up about 6 hp and 4 ft-lbs with a significant increase in sound and much better tone than the stock exhaust. The Competition Series comes with 3 different inserts to adjust the sound levels and power according to the riding area, restrictions, and rider preference. Significantly lighter than the stock system the HMF full system includes the HMF silencer, hardware, and headpipe. The HMF headpipe has built in mounts to utilize the factory heatshield or other heatshields using the same bolt pattern as the factory.

Fits: (2009-2021) YFZ450R, YFZ450X

FUEL TUNING IS REQUIREDLEARN 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.