Ritchey Logo
  • Product image
  • Product image
  • Product image
  • Product image
  • Product image
  • Product image
  • Product image

WCS Zeta Disc Wheels

Cassette Body


Tom Ritchey created the Zeta Disc wheelset to be precise and predictable do-everything race wheels for carving endless ribbons of smooth tarmac, yet durable and reliable enough to endure cyclocross races and gravel rides that would chew lesser wheels to pieces.

Updated for 2024, the heart of the Zeta Disc wheelset features new smooth-rolling WCS forged disc hubs. Inside the rear hub sits the innovative Ratchet Driver system offering a 360-degree, 36-point engagement that ensures direct-drive efficiency and unparalleled power transfer.

The tubeless-ready extruded alloy rims of the WCS Zeta feature Ritchey’s pioneering OCR™ technology - off-center spoke hole drilling that allows equal spoke tension throughout the wheel resulting in an easily dished strong wheel. These wheels ship with pre-installed Ritchey rim tape for easy set up and, importantly, simple access to the spoke heads for repairs and replacement when needed. With a 20mm inner width, these rims welcome tires between 25 and 45mm wide.

The updated WCS Zeta Disc wheels leverage Ritchey’s deep legacy of wheel research and design to deliver the perfect balance between performance, aesthetics, serviceability, and affordability – an ideal combination on which to build a lifetime of extraordinary ride experiences.

Tech Specs

RimsTubeless Ready - OCR offset - proprietary Ritchey extrusion
Rim diameter700c
Rim depth21.0mm
Outer rim width26.0 mm
Inner rim width20.0mm
Suggested tire size range25-45mm
Hubsforged disc thru-axle hubs and sealed bearings 
Hub spacing100x12mm front / 142x12mm rear
Axle Compatibilitythru-axle (12-15mm) - standard quick release (conversion kits available separately)
FreewheelRatchet Driver with 36-point engagement
Freehub materialalloy
Freehub optionsShimano / SRAM XD-Road / Campagnolo (N3W and backwards compatible specs)
CompatibilityShimano 9/10/11-speed and 12-speed road cassette - SRAM XD/XDR - Campagnolo 10/11/13s (freehub conversion kits available separately)
For conversions to Shimano 11/12s or SRAM XDR, end caps (55050007035) must be purchased separately
Disc brake compatibilityCenterlock (hub center-lock lockrings available separately)
SpokesDT Aero Comp 2.0/2.3x1.25mm / black
Front24 spokes / 12x287mm / 12x288mm / 2x lacing
Rear24 spokes / 12x285mm / 12x287mm / 2x lacing
Nipples2.0 brass 12mm / black
Do not use sealants containing ammonia

Related products

Ritchey Newsletter

Join now for engaging stories, exclusive offers and product news delivered right to your inbox.