Ritchey's Comp Zeta GX is a hand-built, tubeless-ready gravel wheelset built around forged disc thru-axle hubs – a durable, lower-cost route into the Zeta GX range.

Highlights

• 700C tubeless-ready 6066 alloy rim, 25mm internal / 29mm outer width, off-centre spoke drilling
• Forged alloy disc thru-axle hubs with sealed bearings and a 4-pawl engagement system
• 110x15mm front / 148x12mm rear thru-axle (Boost), 6-Bolt rotor mount
• Shimano HG freehub, for 9–11-speed and 12-speed Shimano road cassettes.
• 28 DT Elemental 2.0 SG straight-gauge spokes, brass nipples, 2-cross lacing
• Suggested tyre range 32–67mm; 1996g the set with rim strip installed

Build

The 25mm internal rim width suits large-volume gravel and road tyres, and the off-centre spoke drilling evens out spoke tension either side of the disc offset for a wheel that holds true for longer. A 4-pawl engagement system is built into the freehub body for reliable pick-up with minimal servicing.

Note: avoid ammonia-based tubeless sealants on this rim – Ritchey warns they can damage the rim finish.

Compatibility & fit

Shimano HG freehub, for 9–11-speed and 12-speed Shimano road cassettes. Boost thru-axle only (110x15mm front, 148x12mm rear) – not interchangeable with quick-release frames or forks. 6-Bolt rotors only. The Tune workshop can true, tension-check or fit tyres to this wheelset as part of a service.