The Hed premium valve extenders are designed for tires or tubes with remobable 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 tire. 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
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.
⚠️ WARNING: This product can expose you to chemicals including bisphenol-A, which is known to the State of California to cause birth defects or other reproductive harm. For more information, go to WWW.P65WARNINGS.CA.GOV