Pirelli Cinturato SmarTube X Tube - 700 x 40 - 50mm 60mm Presta Valve CheckoutSpec= 20x2.0 40 Tire Width Range 2

40 Tire Width Range 2

by many chosen for its super elastic construction

Choose between four different shaft

The boost offset optimizes this spider for the M30 cranks with a 52mm chainline

Pirelli Cinturato SmarTube X Tube - 700 x 40 - 50mm 60mm Presta Valve CheckoutSpec= 20x2.0 40 Tire Width Range 270% weight savings compared to conventional tubes 50% smaller than conventional tubes 3x thicker than standard SmarTUBES Not for use with rim brakes Not designed to be repaired Constructed of Thermoplastic Polyurethane Weighs just 150 grams TECH SPECS Tube Weight 151g Tube Width 40 50C Valve Presta Valve Length 42mm Wheel Diameter 700C Shaft Type Non threaded