Cut big chunks of time off every time trial and triathlon with Zipp's 840 Disc Rear Wheel. Its super-slim 21mm cross-section and dimpled surface slip through the air with maximum aerodynamic efficiency, while the full-carbon construction puts this disc in the featherweight class so you'll accelerate with ease and dance over the ups. Plus, the 840 boasts awesome lateral stiffness for powerful surges in and out of the saddle.
For maximum aerodynamic efficiency and an incredibly fast ride, Zipp's carbon rims have a dimpled outer surface that minimizes drag.
Zipp's Visco-elastic Constrained Layer Control takes away the harsh ride of carbon disc wheels by sandwiching a layer of viscous material in between two layers of structural carbon, reducing road vibration by up to 10%, giving you a ride that is both blazingly fast and decadently smooth.
These wheels require tubular (sew-up) tires.
Shimano/SRAM/Campagnolo (cassette sold separately)