Knee Vents for your proclimb / procross sled. These knee vents give the heat soaked air under your hood a place to excape, the amount of heat that is released with these vents is unreal.   Kit  comes complete with both vents, clutch side vent has a prefilter layer to keep snow and moisture away from your clutches, along with more than enough black rivets and rivet backers for install.