What are Monster Valves?
Monster valves (P/N MON-8200) are large diameter aluminum valve stems designed by Power TankTM. They are the fastest deflation devices available and they even make inflations faster. They are installed in your wheel as a second stem and are installed without having to dismount your tire from the rim like other stems. They have a built-in Air Lock collar which, when opened up, lets air out at a scary fast rate. And because of its oversized core size inflation times are actually cut in half. Imagine airing down a 35 tire from 30 psi to 10 psi in 15 seconds and then airing back up in 25 seconds.