Maxxis MVS flyweight inner tubes are the lightest butyl tubes known to mankind. Flyweight tubes are 0.45mm thin for weight consideration without loss of performance. To be used only as part of the MVS (Modular Valve System).
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The Maxxis Modular Valve System allows you to easily customise your bike. The separation of the tube and valve stem allows you to choose your valve length and custom colour without having to deal with finicky valve extensions.
When the tube eventually needs to be replaced, the valve stem transfers to the new tube, instead of ending up in the bin. Available in Presta valve stem lengths of 48mm, 60mm, 80mm, and 100mm and in nine different colours. These have a removable valve core and are for use only with MVS inner tubes.