The Airshot is a well made, light, portable and highly functional air canister that allows you to install a tubeless tire by offering a fast high volume shot of air to mount the tire instantly onto the rims bead.
Running mountain bike tires in a tubeless manner has many benefits, including no pinch flats, improved impact absorption and feel, reduced rotational weight (no tubes) and the ability to run lower pressures. However, setting up a tubeless system can be a finicky endeavor and usually requires a compressor or the use of CO2 cartridges to get the tire to pop up onto the rims bead for a secure seal. It can be done with a floor pump, but lot's of practice and some dark arts magic is needed to get most tires to seat. Even with those proper tools, you can still curse, sweat and wrench your hands getting everything set up properly. Small compressors are a useful expenditure for a home shop, but they aren't cheap and are extremely noisy and not functional to take to remote sites.
The Airshot tubeless tire system remedies this situation by giving you the ability to inflate a tubeless tire using a pressurized canister at home, the trailhead, on road trips and during race situations. The Airshot system ($100) consists of a small 1.14-liter air canister with a screw on cap, and the unit can be pumped up to 160 psi.
The top cap is where all the business takes place, and has an integrated Presta input valve to pump up the canister and a high-pressure hose with an adjustable petcock lever at the cap end and a screw-on head at the other that attaches to the tires Presta valve.