The design team went back to the drawing board for the new Mountain Max chassis. Our goals were to create a lite weight silencer with durability, passing sound qualities and performance demanded by our customers. HPS has meet these design goals by reducing weight to only 6.5 lbs and increasing power +2.5 HP. Coupled with our Double Walled Design that greatly decreases under the hood heat and reduces harmful engine harmonics. HPS has proven their designs with supplying two decades of lightweight and durable snowmobile silencers. Elevate your fun factor with this all new silencer!
Fits all the 2020-2021 Yamaha Mountain Max sleds
Holes in the base plate of the HPS silencer are designed to slip over the stock outlet rivets.
Drilling of one rivet and securing the muffler to the belly pan with one #10 bolt (included) is mandatory for guaranteed secured mounting for aggressive riding.
All results are tested with stock parameters with HPS muffler.
(Passes SAE J-2567 sound test approved below 88dbs 4000RPM)