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

WCS Zeta Wheels

Cassette Body


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

With a CNC-machined braking surface for smooth control and stopping power, the alloy rims of the WCS Zeta are tubeless-ready with pre-installed Ritchey rim tape for easy set up and, importantly, simple access to the spoke heads for repairs and replacement when needed. The rear rim features Ritchey’s pioneering OCR™ technology - off-center spoke hole drilling that delivers more equalized spoke tension throughout the wheel, resulting in a stronger wheel. With a 20mm inner width, these rims welcome tires between 25 and 43mm wide – ideal for all your favorite riding disciplines.

At the heart of these rim brake wheels lies the legendary Phantom Flange system, paired with a precision Ratchet Driver system in the rear hub. The Phantom Flange hubs provide the sleek profile of straight-pull spokes while maintaining the strength and reliability of traditional J-bend spokes, striking a perfect balance between aesthetics, performance, and serviceability. Inside the rear hub, the innovative Ratchet Driver system offers a 360-degree, 36-point engagement, ensuring direct-drive efficiency and unparalleled power transfer.

Doubling down on the serviceability of these wheels, you can easily remove…without tools…the freehub body, axle, and Ratchet Driver system for basic periodic maintenance - and to lay flat when packing in a Ritchey Break-Away travel case.

The Ritchey WCS Zeta wheels are not just built; they are crafted to endure the toughest of rides, setting a new standard in wheel performance. And they’re the most versatile Ritchey wheelset on offer.

Every Ritchey wheelset is carefully hand-built by a qualified Ritchey wheel technician.

Tech Specs

Rimsalloy Tubeless Ready with tubeless tape applied - OCR offset rear rim - CNC machined braking surface - proprietary Ritchey extrusion
Rim diameter700c
Rim depth23.8mm
Outer rim width24.4 mm
Inner rim width20.0mm
Suggested tire size range25-43mm
Hubsproprietary superlight Phantom Flange hubs with hidden J-bend spokes - standard quick release only (Ritchey forged quick releases included)
Hub spacing100mm front / 130mm rear
FreewheelRatchet Driver with 36-point engagement
Freehub materialalloy
Freehub optionsShimano / Campy (9-12 speed)
CompatibilityShimano 9-11s and 12s road cassette - SRAM XD/XDR - Campy 10-12s (freehub conversion kits available separately)
Disc brake compatibilityno
SpokesDT Aero Comp 2.0/2.3x1.2mm / blade / black
Front20 spokes / 285mm / radial 
Rear24 spokes / 12x286mm / 12x288mm / radial non-drive side - 2X lacing drive side 
Nipples2.0 brass 12mm / black
Do not use sealants containing ammonia

Logic Features

Phantom Flange

Phantom Flange

Elegantly integrated forged spoke beds in hub shell reduce stress on the spoke head for a stronger wheel system.

OCR Rims

OCR Rims

Off-center spoke drilling offers equal spoke tension throughout the wheel resulting in an easily dished strong wheel.

Related products

Ritchey Newsletter

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