The SporTUBE is the most classic cycling inner butyl tube range, the standard interpretation of the most used air retention system in the world Features Wheel Size: 29". Valve Type: Presta. Valve Length: 48mm.
Best Price: £4.99 from Merlin Cycles
Pirelli MTB Sport Inner Tube – 29" – Black / 29" / 2.1" / 2.3" / 48mm Valve Reviews