Bontrager Presta Valve Extender

A must-have for deep section rims like Bontrager's Aeolus series wheels, these high quality extenders install between your tubular tire's or inner tube's valve stem and removable Presta valve core. 30 mm extender works with Aeolus 5 rims (5 cm high) (and shallower). 60 mm extender designed for Aeolus higher 5 rims.