Scorpion SmarTube is the mountain bike specific inner tube that blends the innovative features of TPU (Thermoplastic Polyurethane), a specific formulation for the riders that are looking for the best balance between protection against punctures, weight and volume.SmarTube offers low weight and volume combined with a high level of reliability, not available with an equivalent butyl tubeThe perfect solution for marathon racers and trail and enduro riders that are looking for a lightweight, resistant and compact spare tubeThe volume of the Scorpion SmarTube is up to 50% less than an equivalent butyl tube making it the ultimate spare tube: it saves space and doesn't add weight on the trailsDo not use with rim brakesItem SpecificationsISO Diameter584 / 650b / 27.5"ISO Width (mm)55ISO Width (mm)56ISO Width (mm)57ISO Width (mm)58ISO Width (mm)59ISO Width (mm)60ISO Width (mm)61ISO Width (mm)62ISO Width (mm)63ISO Width (mm)64ISO Width (mm)65ISO Width (mm)66Labeled Size27.5 x 2.2 - 2.6Shaft TypeSmoothTube CompoundThermoplastic ElastomerValve CoreFixedValvePresta Med 41-55mmWeight95 Pirelli Scorpion SmarTube Tubes EAN: 8019227409420