Challenge Aluminium Valve Extender Kit - for use with our HUP 50mm wheelsets and the Challenge Latex inner tubes...

• Application: Gravel, Cyclocross, Road
  
• Valve Material: aluminium
• Valve Type: Presta
• Valve Length: 31.5 mm

British Cycling/British Triathlon Age Group Gear Restritction Rollout:

For full advice on tyres/gearing for British Cycling/British Triathlon gear restricted events