Introducing … TOPEAK's Presta Valve Extenders.
Aero wheels: Valve Stem Extenders- why you need them for Aero Wheels (Cycling Tips)
Bicycle Tire Valve Extender Bike valve extender tire Wheel 40mm
OBUS RECSH EXT VALV PR P/S 7O - Vitasport Cycles
Valve Extender How-To
VALVE EXTENDER 40MM
PRESTA VALVE EXTENDER
How to use these valve extenders? They do not have threads at the
Bontrager Presta Valve Extenders - Western Cycle Source for Sports