135/145x13 Standard Inner Tube
A standard 135/145-13 tube. Note that since Blockley produced their own 145R13 tyre we decided to make an even better quality thicker version of this 135/145R13 tube which is also available.
Made from Butyl, this is a good quality albeit standard thickness inner tube, priced accordingly. We also produce a heavier duty thicker version of this tube.