450/525x20/21 Inner Tube

A good thickness robust butyl inner tube sized 450/525x20/21

(£32.40 inc. vat)


This Blockley tube is thick, made from butyl and has the rubber valve stem. There is no better tube made, or available, than this Blockley tube. Dont forget to use our 21" rim bands too . . .

We also make this tube with a metal stem.