Valve Extender

##Zipp Valve Extender Zipp's valve extensions guarantee a perfect seal when tightened and a raised, machined head with a slight bevel eases installation of the pump head. A ridged section keeps the pump head from slipping. Note: Valve extensions require careful installation, so we highly recommend pre-installing them on your spare tyres and tubes before your race. Please select 74mm for the 72mm length.