http://zipp.com/wheels/super-9----disc-brake-carbon-clincher-disc/#
http://www.bikerumor.com/...isc-premium-202-nsw/
From Zipp.com:
Zipp’s first product almost three decades ago was a disc wheel. It’s at the heart of our heritage. Now, Zipp® is pioneering the next generation of disc wheel, the new Super-9 Disc-brake Carbon Clincher Disc. Road cycling’s latest advancement in performance – disc brakes for road bikes – is coming to triathlons and time trials, and Zipp is ensuring its fastest wheel ever is ready for this soon-to-arrive future.
Braking on modern time trial and triathlon bikes often has been a challenge.
The superior performance of disc brakes changes all that with greater stopping power and more precise speed modulation, all with less hand effort than required by traditional brakes. That means greater confidence in corners, descents, and on technical courses. The disc brake version of the Super-9 disc, 1175 grams for the Carbon Clincher, retains the light weight of its rim-brake counterparts.
Efficient speed adjustments on technical sections of road are crucial to conserving energy and maintaining speed. Disc-brakes, standard in motorsports, gained prominence in mountain biking, then cyclocross, and now are being embraced on the road. The reason is simple: How you slow down influences how fast you go.
The introduction of the Super-9 Disc-brake completes the expansion of disc-brake options across Zipp’s entire carbon wheel lineup, from the disc wheel down to the 32-mm deep 202 Firecrest Disc-brake wheelset.
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