The Joe Blow Booster is a dual-function pump that works as a regular floor pump and also aids in the installation of tubeless tires, replacing the need for an air compressor. This is a great tool that can take the place of an air compressor in situations where one isn't available or it isn't practical or desirable, making it a great choice for both the professional and recreational user. In addition to the regular pump barrel, there is an additional aluminum chamber that holds one liter of air at a pressure up to 160 psi (11 bar).
The Topeak JoeBlow Booster is updated with a new nozzle. Aside from the new nozzle with the air bleed feature, the pump has not changed.
By turning a thick plastic dial (that surrounds the gauge at the top of the pump), this stored air can be released in a single blast of air to snap the bead of a tubeless tire onto a rim. Once the bead is set, air can be easily added to the tire in the same manner as a traditional floor pump. Likewise, an air release valve allows air to be bled directly from the tire with the push of a button. The pump looks heavy-duty and is very well built, with metal incorporated wisely on highly used and abused components, like the steel base and the lever on the SmartHead, which automatically adjusts to fit Presta or Schrader valves. Where plastic is used, it is robust and thick, giving the pump a look that begs you to toss it into the truck bed with abandon. In the past, we've tried numerous tricks to seat a tubeless tire using a regular pump or a CO2 cartridge. Most often we were left sweaty, frustrated, and on our way to the local bike shop. With only one exception, we successfully seated a wide array of tubeless tires quietly, at home, without using any electricity. We found this pump to be an excellent addition to our kit and it now serves as our primary pump at home and on the road.