Pirelli Angel SmarTube X Tube - 700 x 28 - 42mm 42mm Presta Valve CheckoutSpec= BR-M9000 X0 Transmission Cranks are maximized

X0 Transmission Cranks are maximized for title winning stiffness and feature the remarkable new XX Eagle Transmission (T-Type) direct mount chainring

The ATRA (Advanced Training Resistance Aluminum) Speed Reducer has a machined aluminum bearing retainer for the best heat dissipation and strength

Ergonomic single clamp design with reinforced ends provides more usable grip space

Vail High Life

Replacement parts available

Pirelli Angel SmarTube X Tube - 700 x 28 - 42mm 42mm Presta Valve CheckoutSpec= BR-M9000 X0 Transmission Cranks are maximized70% 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 TECH SPECS Valve Length 42mm Shaft Type Non threaded Tube Width 28 42C Valve Presta Wheel Diameter 700C Tube Weight 145g