Zipp Presta Valve Extenders Deep Rims Need This Deep-section carbon wheels look fast because they are fast, but that extra rim depth puts the valve core well below the rim bed, out of reach for a standard pump head. These valve extenders solve that problem without adding complexity. Thread one onto your Presta valve and your floor pump or CO2 inflator connects the same as it always has, no adapter gymnastics required. A straightforward fix that keeps your wheel setup complete and your pre-ride routine on schedule. Features Presta valve compatibility threads directly onto standard removable Presta valve cores for a secure, airtight connection Deep-rim fitment sized to bring the valve tip above the rim bed on deep-section Zipp wheels for full pump head access Lightweight metal construction adds negligible rotational weight while keeping the connection point durable Sold as a pair covers both wheels so your front and rear setup stays consistent | Zipp | Presta Valve Extenders 33Mm