The Whisper Biscuit

Noise-reducing disc for Big Mo Exhaust systems Helps reduce DBs on the trail Fits all our Big Mo's, and the X3 and YXZ Full Systems Maintain back pressure on N/A's with stock tunes Achieves semi-anechoic, physical acoustic attenuation through rigid body absorption causing the suppression of longitudinal waves by precise, transverse conversion. THE WHISPER BISCUIT IS MADE TO REDUCE DB FOR SLOW TRAIL RIDING COMFORT AND MUST BE REMOVED IF RACING OR AGGRESSIVE TRAIL RIDING. IF BIG MO IS RUN WITH WHISPER BISCUIT AT HIGH THROTTLE LOAD DAMAGE TO MUFFLER AND OR MACHINE MAY OCCUR.