Michelin G4 AIRSTOP 20X1.5 / 2.1 MTB Inner Tube 34mm Schrader Valve

The famous MICHELIN inner tube in Butyl Airstop is available here in size 20X1.5 / 2.1 . This is a 20 inch MTB inner tube, with a 34mm wide valve. We thus have the standard tire width and a low rim . NB: The size of the inner tube to be used is indicated on the sidewall of your tire.