The Yamaha Grizzly 450 HMF Slip-On is available in the Performance Series. The Performance Series slip-on system picks up 10-15% more horse power and torque throughout the power curve, and remains substantially less that the stock exhaust.
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.