The Ritchey WCS Zeta Disc is a versatile, high-performance wheelset designed for road bikes with disc brakes. This wheelset is ideal for riders seeking top performance on the road but also needing the robustness for gravel riding and cyclocross. Below, you'll find a detailed description of the key features and specifications.

 Key Features:

 
 Material & Construction:
 The wheels are constructed from lightweight, extruded aluminum with Ritchey's proprietary OCR™ (Off-Center Rim) technology, where the spoke holes are drilled off-center. This ensures even spoke tension and a stronger, stiffer wheelset.
 
 Rim:
  

   
 Tubeless ready (hooked)
   
 Internal width: 21 mm
   
 Outer width: 25.5-25.6 mm
   
 Depth: 24.4 mm
   
 Suitable for tires from 25 to 45 mm wide.
  
 
 Hubs:
  

   
 New WCS forged disc hubs feature an innovative ratchet driver system (360°/36-point engagement) for direct power transfer and quick engagement1.
   
 Two-piece forged, machined design for increased stiffness and strength23.
   
 Centerlock disc brake mount
   
 Front axle: 12x100 mm
   
 Rear axle: 12x142 mm
   
 Easy to service without special tools, including removing the cassette body.
  
 
 Spoke configuration:
  

   
 24 spokes front and rear
   
 DT Competition 2.0/1.8 double butted spokes
   
 2.0 mm brass nipples.
  
 
 Freewheel:
  

   
 Shimano HG body (suitable for Shimano/SRAM 10/11-speed)
   
 Also compatible with SRAM XDR and Campagnolo (with optional conversion kit).
  
 
 Weight:
  

   
 Manufacturer's specifications: approx. 1,650 grams per set
   
 Independent measurements: approx. 1,550-1,560 grams per set.
  
 
 Other features:
  

   
 Hand-built by a certified Ritchey technician
   
 Comes with pre-installed Ritchey tubeless rim tape
   
 Finished in black with subtle graphics.
  


 Use & Target Audience:
 This wheelset is designed for riders looking for a strong, lightweight, and reliable wheelset for a variety of conditions. The Ritchey WCS Zeta Disc is suitable for:

 
 Racing bicycles with disc brakes
 
 Gravel bikes
 
 Cyclocross bikes


 Summary:
 The Ritchey WCS Zeta Disc Shimano is a modern, lightweight, and durable wheelset that excels in versatility. Thanks to its tubeless-ready rims, strong and easy-to-service hubs, and a balanced blend of stiffness and comfort, this wheelset is an excellent choice for both the demanding racer and the adventurous gravel rider.


 
 Rims: WCS Zeta Tubeless OCR
 
 Patented Ritchey extrusion balances ride quality and aerodynamics
 
 Rear OCR® (Off Center Rim) design reduces wheel dish to balance spoke tension for a stronger, stiffer wheel
 
 Hubs: WCS Disc thru-axle (convertible to 9mm standard QR, sold separately)
 
 Spokes: DT Competition 2.0 / 1.8 DB
 
 Nipples: brass
 
 Build: 24 / 2x
 
 Freehub: alloy
 
 Centerlock compatible
 
 BB black finish
 
 Freehub options: Shimano or SRAM XD
 
 Weight: 735g front / 825g rear