Pirelli Cinturato SmarTube Tube - 650 x 40 - 50mm 60mm Presta Valve MFPN=803-04-231 the new STP 20 gives

the new STP 20 gives kids the confidence and maneuverability they need to start leaning into the turns

Adjustable rebound and air spring pressure Stroke (mm) 55 Lockout Switch Handlebar - Cable Metric Yes Eyelet Diameter (mm) 12

One complete master link stores within a compartment

} This quality mounting anchor can be fixed to the wall as well as to the ground

Forged aluminum mounts

Pirelli Cinturato SmarTube Tube - 650 x 40 - 50mm 60mm Presta Valve MFPN=803-04-231 the new STP 20 givesCinturato SmarTube is the cycling inner tube designed for gravel adventure and endurance. The tube provides all the benefits of the innovative TPU (Thermoplastic Polyurethane) and thanks to a specific formulation that delivers the best performances for those who are looking for superior puncture resistance with low weight and compact size. SmarTube is a one of a kind inner tube: reduced weight and compact size with unparalleled puncture protection