41,5mm, (1.3") for 303 and new 202 (32 mm profile) dimpled wheel sets.
65.5mm( 1.9") for 404 dimpled wheel sets
91.5mm (3.9") for dimpled 1080 wheel sets
Zipp’s custom-designed valve extensions feature a 3 mm hex broach in the barrel to guarantee a perfect seal when tightened and a raised machined head with a slight bevel to ease installation of the pump head.
A ridged section keeps the pump head from slipping