Spare tube for 21 inch wheel | TUBLISS

Product description

Features - Eliminates the need for a traditional inner tube | Allows for riding at very low tire pressure for optimal traction | Reduces wheel weight for improved acceleration and traction | Reduces tire temperature for improved pressure and traction | Allows for riding with a punctured tire | Protects the rim from damage | Dual air chambers for added protection and adjustability | High-pressure chamber (6.9 bar/100 psi) for rim protection and sealing | Low-pressure chamber for optimal traction | Easy tire removal and replacement