This unique device allows for quicker changes of maximum engine speed to OPTIMIZE HORSEPOWER OUTPUT

A BMP helix built for torsion conversion IS REQUIRED

weighs 11 lbs

Uses stock mounting location

exhaust spring bases

Hi Flow Air Box Shelf / Pro-R 600 - 800 CFI Category_Default Category/SLED/Arctic Cat/F6 '07-10 This unique device allows forA 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