Zipp Super-9 Tubeless Disc-Brake Disc Wheel Size:Rear Wheel - SRAM XDR AUTO CALIBRATION (NO SPINDOWN NEEDED

AUTO CALIBRATION (NO SPINDOWN NEEDED EVER)

Cassette Cogs: choose

Whether you're a professional racer or amateur racer

and the Service Course 70-Ergo has been updated with the newest features that riders need

Numerous studies prove that disc wheels have the lowest air resistance when the wind blows from the front

Zipp Super-9 Tubeless Disc-Brake Disc Wheel Size:Rear Wheel - SRAM XDR AUTO CALIBRATION (NO SPINDOWN NEEDEDSmoother is faster with the Zipp Super 9 Tubeless Disc Brake Disc. Among the lightest disc wheels available, the Super 9 is a superior addition to your modern triathlon and time trial bike. Its refined shape runs wide and parallel from the hub until it feathers inward as it meets the hookless tire bed. Thanks to Zipps Total System Efficiency (TSE) carbon laminate and design, the Super 9 is engineered for a new era of wider tires and lower tire