The Super-9 gives you the technology needed to do your best. Pro-proven, the Super-9 Tubular rim-brake wheel optimizes supreme aerodynamics, power transfer, stiffness, lightweight and durability. The Super-9 remains flat from its widest point all the way to the hub. This relatively simple-looking shape results in a wheel that's fast and stiff.
We've employed Zipp's ImPress graphics technology, which prints graphics directly on the wheel, to help allow the dimples to do what they were design to do - help control vortex shedding, the rate at which air sheds off the wheel. Managing this is crucial to stability. ImPress graphics also give 808 NSW a distinctive stealthy look.
The XDR driver body is a universal mounting system for cassettes that incorporate cogs with fewer than 11 teeth. It allows for lighter and more versatile drivetrains without requiring new rear axle standards, cassette tools or hub redesigns. The XDR interface is 1.85mm longer than XD and is designed for road hub applications. XDR driver bodies are compatible with all XD cassettes when the cassette is installed with a 1.85mm spacer.