Zipp's legendary speed weapon, the 404 Firecrest, is better than ever. This go-to rim-brake wheelset is, for the first time, tubeless ready. That means you can run reduced tire pressure for reduced rolling resistance and increased cornering grip and compliance without the risk of pinch flats. This wheelset's 58mm rim depth is a classic that has carried athletes to victory in every kind of event and situation – every triathlon distance, breakaways, field sprints and hilly finishes. Zipp's ABLC™ Sawtooth™ Technology uses a complex dimpling pattern to improve aero efficiency. Zipp's ShowStopper™ textured braking surface delivers unrivalled rim braking performance in wet or dry conditions. At the center of the 404 Firecrest Tubeless rim-brake is a versatile and durable new hubset, the German engineered ZR1. If you had to choose just one wheel for road riding and racing, the 404 Firecrest Tubeless is a savvy and speedy choice. Specifications:- Speed: 11- Size (Inch): 28- Size (Wheels): 700c- Rim construction: Carbon - w/Hooks- Tire compatibility: Tube-type or Tubeless tires- Brake: Rim- Driver body type: SRAM/Shimano Road- Rim - Inside width: 19mm- Rim finish: UD fiber, adhesive decals- Rim profile: Symmetrical- Weight (g): 1621- Weight on: Wheel set in lightest configuration: Quick Release axles and XDR body. - No tape or valve included. - Front: 734g - Rear: 887g