Schwalbe AV21E+ Aerothan Inner Tube

The Schwalbe AV21E+ Aerothan inner tube is made from TPU for 27,5-inch wheels, designed for riders seeking a lightweight inner tube, including for use with rim brakes. With a 40 mm Schrader (AV) valve, it weighs 118 g: the manufacturer claims approximately 40% less weight than a Schwalbe Extralight inner tube.

This model is heat-resistant, has an increased wall thickness and is approved for rim brakes. For sizing, the specifications list ETRTO compatibility 54/62-584, equivalent to 27,5 x 2.10-2.45 inches: check the tyre width before buying. The inner tube is 100% recyclable and manufactured in Germany by Ralf Bohle GmbH in Reichshof.

Schwalbe was established in Germany in 1973 by Ralf Bohle, with roots in the family business founded in Bergneustadt in 1922. Today it is based in Reichshof and makes bicycle tyres and inner tubes. Its name means “swallow” in German and translates Swallow, the name of the first tyres imported from Korea.