The HED premium valve extenders are designed for tyres or tubes with removable valve cores. The presta valve core must be removed from the valve, and threaded in to the end of the extender. This allows the valve to be threaded shut, unlike our standard valve extender.
NOTE: We recommend pre-installing a spare extender on to your spare inner tube or spare tubular tyre. Doing so will greatly improve your flat-changing time on the road, especially in high-pressure race situations.
40mm fits Stinger 3, 5, 6, or Jet 4, 5, and 6
80mm fits Stinger 7, 9, Disc or Jet 7, 9
Installation tool included
Sold in pairs. please specifiy the length required via the drop down menu on this page when ordering.
Use the supplied tool to unthread your existing presta valve. Cover the valve extender threads with a couple wraps of Teflon plumber's tape. Thread the valve extender in firmly; you know that there is enough Teflon tape if you feel some resistance while threading on the extender. Finally, thread the valve core in to the end of the extender.