Zipp Super-9 Tubeless Disc-Brake Disc Wheel Size:Rear Wheel - SRAM XDR Whether you're a professional racer

Whether you're a professional racer or amateur racer

Built with robust features including a molded cap design to protect against rock strikes

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

Greater chain retention to extend portion on the end of inner plate to firmly hold the tooth both front and cassette sprocket

Zipp Super-9 Tubeless Disc-Brake Disc Wheel Size:Rear Wheel - SRAM XDR Whether you're a professional racerSmoother 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