The Big Bear 400 is available as a Slip-On in the Performance Series. The slip-on exhaust system picks up 10-15% more horse power and torque throughout the power curve, and weighs substantially less that the stock exhaust. The Performance exhaust is typically 4-6 decibels louder than the stock exhaust, but the HMF Quiet Core insert can lower that 2-4 dB.
Fits: (00-12) Big Bear 400, YFM40FV, FR, 4WD
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.