Hi Flow Air Box Shelf / Pro-R 600 - 800 CFI Category_Default Category/SLED/Yamaha/Mountain Max '20+ 2 7/16” high x 1

2 7/16” high x 1 3/4” diameter measured from cylinder mounting surface

10-SPK-301

The slip-on muffler allows for the use of our quiet cap

the Bikeman Race Pipe allows your turbo to spool significantly faster

Custom Cut spec (can only purchase this spec from Bikeman)

Hi Flow Air Box Shelf / Pro-R 600 - 800 CFI Category_Default Category/SLED/Yamaha/Mountain Max '20+ 2 7/16” high x 1A great modification to get more air and more power is to modify your airbox. Pull the cover off the box and inside you will find a shelf like the one pictured below. Remove this shelf replace it with our BMP High Flow Pro R Shelf. We found holes in the top side of the shelf like shown worked out the best; gaining you 3 horsepower through mid to peak. Some may think more is better and want to add holes in the bottom side of the shelf also. We advise