Whites Tube 130/90-15 / 140/80-15 TR4All Whites inner tubes are developed to the highest technical specifications and quality standards. Constructed from high quality butyl, we have the perfect range for your ATV, MXer or farm ride. Its butyl construction has significantly improved air retention properties when compared with natural rubber, ensuring your tubes stay inflated for longer. Features: Constructed from high quality butyl rubber. Better air retention than natural rubber.