Auxiliary Air Tank Perfect for mobile set-ups, and/or as an in-line backup for permanent installs, the Auxiliary Air Tank by Pro Gate brings some big air, even before your riders are on the track. The “Pro Gate Yellow” finish adds a level of cred to the head. Tags: BMX Starting Gate Systems BMX Starting Gates BMX Track Equipment BMX Track Maintenance Pro Gate "Gatekeeper" Accessories Pro Gate Accessories Pro Gate Auxiliary Air Tank Pro Gate BMX