ZIPP Super-9 Tubeless Disc-Brake Disc Wheel

The Zipp Super-9 Tubeless Disc-Brake Disc Wheel (model WH-SP9-TLD-B1) is a rear disc wheel for triathlon and time-trial bikes. Zipp describes it as one of the lightest disc wheels available and says it is fastest with 28 mm tubeless tyres at lower than traditional pressures.

• Zipp-claimed weight: 1,050 g
• Hookless carbon, tubeless (TSS): 23 mm internal / 30.4 mm external width
• Tyres: 28 mm minimum and optimal size (Zipp)
• Integrated TyreWiz 2.0 tyre-pressure monitor (10 g)
• Hub: ZR1 SL with ceramic bearings and 66 points of engagement
• Disc brake, Center Lock, 12 × 142 mm thru-axle
• Freehub: SRAM XDR or Shimano HG 11-speed

Zipp: "The Super-9 pairs perfectly with Zipp's current tubeless front wheels."