Ritchey Comp Zeta GX Boost Gravel Disc Wheelset Tubeless-Ready 6-Bolt

The Ritchey Comp Zeta GX Disc Boost Wheelset represents the culmination of over five decades of innovation and expertise in wheel design. Inspired by the legendary performance and reliability of the original Ritchey Zeta wheels, these hand-built gravel wheels are engineered to excel on diverse terrains, offering riders unmatched durability and versatility. Whether you're carving through rugged trails or cruising on gravel roads, these wheels provide a dependable platform that keeps you moving forward with confidence.

Built with a 6066 alloy tubeless-ready rim featuring an offset design (OCR), the Comp Zeta GX Boost wheelset boasts a wide 25mm inner rim diameter, perfectly accommodating wider tires for enhanced grip and comfort on gravel surfaces. The 19mm rim depth paired with a 29mm outer rim width balances strength and weight, ensuring responsive handling without compromising durability. The hand-laced 28-spoke configuration uses DT Elemental 2.0 SG spokes and brass nipples, delivering a robust yet lightweight wheelset optimized for the demands of off-road adventures.

At the heart of the wheelset are forged disc hubs with sealed bearings that promise smooth rotation and long-lasting performance. Featuring a 4-pawl engagement system integrated with the freehub body, these wheels offer quick, reliable engagement for responsive power transfer. Boost spacing (110x12mm front and 148x12mm rear) ensures enhanced stiffness and compatibility with modern thru-axle frames. Plus, the wheels are compatible with a wide range of freehub options including Shimano, Shimano Micro-Spline, and SRAM XD-Road, accommodating various drivetrains for maximum versatility.

True to Tom Ritchey’s philosophy of creating gear that is fundamentally reliable and built to withstand the toughest conditions, the Comp Zeta GX Boost wheels deliver exceptional performance for gravel riders who demand both strength and dependability. Whether venturing into remote backcountry or tackling local gravel routes, these wheels are engineered to get you home safely and ready to ride again.

What It’s Good For

• Providing exceptional durability and reliability on gravel and rough terrain
• Supporting wider tires (32-67mm) for improved traction and comfort
• Offering smooth, quick engagement for responsive power transfer
• Ensuring compatibility with multiple drivetrain systems and thru-axle frames
• Enabling tubeless setups to reduce flats and improve ride quality
• Delivering a lightweight yet sturdy wheelset ideal for long-distance gravel riding
• Being hand-built for precision and enhanced wheel strength

What It’s NOT Good For

• Use with sealants containing ammonia, which may damage the rim materials
• Applications outside the scope of gravel and mixed terrain cycling, such as pure road racing requiring ultra-light wheels
• Riders requiring wheelsets specifically designed for heavy downhill or extreme mountain biking use
• Compatibility with non-disc brake systems, as these wheels are designed exclusively for 6-bolt disc brake setups

Frequently Asked Questions

Are these wheels compatible with my bike’s drivetrain?
The Ritchey Comp Zeta GX Boost wheelset supports Shimano 9-11 speed and 12 speed road and MTB cassettes, SRAM XD/XDR, and Campagnolo N3W freehubs (conversion kits sold separately), making it compatible with a wide variety of drivetrains.

Can I use these wheels tubeless?
Yes, these rims are tubeless-ready with an OCR offset design, making them perfect for setting up tubeless tires to reduce flats and improve ride comfort on gravel and off-road terrain.