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Blackburn AirStik 2-Stage Mini Pump
The Blackburn AirStik 2-Stage pump is a nicely compact pump that has more volume than the AirStik SL, but can still be stowed in a jersey pocket or a seat bag.
The AirStik 2-stage pump is best used as a backup pump for mountain biking, due to its low volume (relative to a mountain bike tire). Prefer the Blackburn Mountain Air AnyValve for a primary pump, for reasons of volume. However, if flats are infrequent, the AirStik 2-Stage might be just enough for some riders.
The Blackburn AirStik 2-stage pump comes with a mounting kit for attaching to the water bottle mount under the water bottle cage.
A rear switch adjusts the pump to a high pressure or low pressure setting, so it’s good for mountain bike or road bike tires.
I weighed the AirStik SL on my OHaus lab scale—
AirStik 2-stage: 87 grams +16g for frame mount