Specialized Air Tool Big Bore Pump Headsets Featuring a durable VersaWeave™ shell

Featuring a durable VersaWeave™ shell for debris and weather resistance

Position Polling

YKK® zipped inner security chest pocket

Two layers of durable Aerolyte comfort foam help your feet relax inside your shoes & provides extra protection on rough terrain

For a particularly compact and fine sheath structure

Specialized Air Tool Big Bore Pump Headsets Featuring a durable VersaWeave™ shellDesigned for Fat and Semi Fat tire bikes, the Air Tool Big Bore Pump packs massive volume per stroke, and it features a head that still works with winter gloves on to make it perfect for backcountry winter fat biking. Oversized press on Schrader and Presta head won't accidentally remove valve cores and can be easily used with thick gloves. Flexible hose attachment allows for aggressive pumping without fear of damaging valve stems. Inverted barrel