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

Higher peak rpm and HP

10-SPK-301

Pipe comes with 2" stinger designed for sea-level elevation

Head gasket for a Polaris Pro R 2022+

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