BR.1 SIDE AIR KIT (V.10) BRUS HELMET ALLOWS YOU TO CONVERT YOUR BR-1 HELMET TO A SIDE FORCED AIR HELMET. BR.1 SIDE AIR KIT (V.10) BRUS HELMET COMES IN YOUR CHOICE OF THE STANDARD 1" NIPPLE OR THE NEW SMALL SIZED NIPPLE FOR THE ROUSH AND PENSKE AIR SYSTEMS. AVAILABLE IN WHITE AND MATTE BLACK. KIT INCLUDES AIR PIPE PLATE, RIGHT SIDE SMOOTH BLOCK OFF PLATE AND COLOR COORDINATING SCREWS.