Smartube RS Redefining Inner Tube Performance. Introducing the upgraded Smartube RS: engineered to be up to 21% faster than the original Smartube, lighter and featuring enhanced puncture protection. Thanks to a brand-new Thermoplastic polyurethane formulation, Smartube RS sets a new standard€”delivering unmatched performance, reliability, and versatility. Whether you€™re using Tube Type or Tubeless Ready (TLR) tires, Smartube RS integrates seamlessly into your setup. Testing proves it offers rolling speeds comparable to sealant-based tubeless systems€”without the mess or maintenance. No compromises. No complications, just pure speed, made simple. Pair it with our P ZERO Race RS tires for the fastest, most efficient system we€™ve ever created.