evo.com | Pirelli Tubes > Butyl do as butyl be, as the old saying goes. A Pirelli SporTUBE Presta Tube doesn't do much other than hold air, but that's all you ever want your tube to do. You can take a gamble and go with a no-name job from the hardware store, or you can rock one of the most famous names in pneumatic tire history. The choice is yours. Butyl Compound 260g 48mm Presta Valve | Pirelli SporTUBE Presta Tube 29 2023 - 2.1-2.3 / 48mm