Zipp is no stranger to making blazing fast disc wheels that can bring out the most possible power on the track. In fact, their first ever wheel was a disc wheel. They have since innovated and stayed ahead of the competition through advanced testing. A lot of this testing was done in the wind tunnel, comparing results to other top carbon disc wheels to make improvements. The Wheel was also tested on the fastest track frames to make sure it works perfectly with the bikes it will be used on. The Super-9 wheel uses a stiff carbon laminate and is optimized for 23mm tires, providing maximum aero performance. It remains lightweight and durable, assuring all-around performance and a long life. The Zipp Super-9 Clincher Track Wheel helps track riders turn every pedal stroke into pure power.