Zipp Tangente Butyl Inner Tube. Tube Butyl with Aluminum Presta Valve
- Zipp Tangente Butyl Inner Tube Tube Butyl with Aluminum Presta Valve The Zipp Tangente butyl road inner tube with a removable core is designed to improve rotational stability by decreasing rotational mass at the valve body. It features a lightweight aluminum Presta-valve body, 37 mm length with a removable valve core. Tubes are 700c x 19-23 mm, weighing 89g without a valve extender. The aluminum valve body saves weight, allowing us to make a tube that is 0.85 mm thick to optimize durability. Zipp Integrated Valve Extenders also are available in lengths for each Zipp wheel along with a handy wrench set.