Lezyne CNC Dirt Floor Drive ABS Pump

Too long have mountain bikers had to suffer the indignity of using road biker floor pumps designed for skinny little tires and high pressure. Too long have we wasted valuable energy by using pumps which require excessive strokes to inflate our large-volume rubber. Lezyne has heard our cries, and they have delivered... The Lezyne CNC Dirt Floor Drive is the universe's first floor pump designed specifically for mountain bike tires, updated for 2012 with Lezyne's ABS—Air Bleed System—and Speed Fit chucks. 

Lezyne's Air Bleed System—or ABS—consists of the ABS Flip Thread and Speed Fit chucks, which allow effortless attachment and removal of the pump to your valve stems. Lezyne's ABS chuck is similar to their Flip Chuck, and will thread on to both presta and schrader valves, but there's one big difference: the Bleed. By pushing the button on the ABS chuck, pressure from the pump is released, allowing you to remove the hose from the valve with no effort and no fear of pulling your valve core out. A Speed Fit chuck tops off the ABS Flip Thread chuck if you prefer to press the chuck onto your valve.

We used a Dirt Floor Drive on a 2.3 Weirwolf and needed only 12 effortless strokes to get to 25 psi. Additionally, we used the Dirt Floor Drive to seat the same tire tubeless with no more effort than a regular inflation. For comparisons sake, a competing pump brands high-end offering took more than twice as many strokes to get to 25 psi, and good luck seating a tubeless tire with that. The Dirt Floor Drive is for Real! Be aware, however, the Dirt Floor Drive is for large-volume, mountain bike tires only. The gauge only goes to 70 psi, and due to the extra large volume barrel, it's not optimal for high pressure use. But for large-volume mtb tires, there is no other choice.