Princeton Blur 633 Disc Brake Disc Wheel w/TUNE Hub

The Princeton CarbonWorks Blur 633 Disc Brake Disc Wheel w/TUNE Hub is a rear disc wheel built around a single, uncompromising goal: eliminating aerodynamic drag at the point where it matters most. This isn't a wheel that hedges its bets between versatility and performance. It's a purpose-built weapon for time trials, triathlons, and any discipline where sustained speed is the only metric worth chasing. Princeton CarbonWorks has developed the Blur line to the level where Team INEOS Grenadiers have trusted it at the highest rungs of professional racing — a benchmark that speaks clearly about what this carbon disc is capable of delivering.

The construction foundation is a full-carbon monocoque structure — meaning the disc is formed as one continuous, integrated piece rather than assembled from bonded components or layered sub-sections. This matters more than it might sound. Monocoque fabrication gives Princeton precise control over the surface geometry and internal stress distribution across the entire wheel, producing a disc that responds to hard efforts with consistent stiffness and doesn't have weak points at bond lines or seams. A holeless tire bed reinforces that structural integrity further, removing the spoke-bed perforations that conventional rim designs require. The result is a stiffer, cleaner internal channel — one that works in concert with tubeless setups to maintain air pressure more reliably under race conditions.

Paired with a TUNE hub, the Blur 633 keeps rotating mass low and bearing resistance well managed. TUNE has a strong reputation in the time trial and triathlon communities for precision manufacturing and smooth, dependable engagement — qualities that align naturally with a disc wheel designed to carry momentum rather than build it through reactive acceleration. Available in HG11 (Shimano/SRAM 11-speed) and XDR Driver configurations, this wheel integrates cleanly into a range of dedicated aero builds, whether that's a TT bike assembled for the velodrome or an elite triathlon setup targeting long-course competition.

Princeton Blur 633 Disc Brake Specs at a Glance

• Manufacturer: Princeton CarbonWorks
• Wheel Position: Rear disc wheel (sold individually)
• Brake Type: Disc brake
• Tire Compatibility: Tubeless
• Construction: Full-carbon monocoque
• Rim Depth: 63.3mm
• Rim Design: Holeless tire bed
• Hub: TUNE
• Drivetrain Options: HG11 (Shimano/SRAM 11-speed) or XDR Driver
• Intended Use: Time trial, triathlon, aero road
• Professional Adoption: Raced by Team INEOS Grenadiers

Design Benefits

1. Monocoque Carbon Construction: Forming the disc as a single continuous structure eliminates bonded joints and inconsistencies in layered assemblies. Stress distributes uniformly across the surface, giving the wheel a more predictable, rigid response under sustained power — particularly relevant in the final kilometers of a time trial when output is highest and every watt of mechanical loss counts.
2. Holeless Tire Bed: Removing spoke-bed perforations isn't just a structural decision — it creates a sealed, continuous internal channel that works directly with tubeless tire setups. The result is more stable air volume, reduced risk of pressure loss through the rim structure, and a surface that contributes to the overall aerodynamic profile of the wheel rather than disrupting it.
3. 63.3mm Full Disc Profile: At this depth, the disc is designed to take full advantage of aerodynamic drag reduction over the rear wheel — an area that represents a meaningful portion of total rider drag in a time trial or triathlon position. The full disc format removes the spoke disruption entirely, presenting a smooth, uninterrupted surface to oncoming air.
4. TUNE Hub Integration: TUNE hubs are chosen for their low rotational weight and minimal bearing resistance — factors that compound over long efforts. On a disc wheel intended to carry speed over distance, reducing the energy lost to hub friction and rotating mass keeps the rider's power translating more directly into forward motion.

Final Take

The Princeton Blur 633 with TUNE Hub is built for riders who have already made the decision to go fast and are now optimizing the details. It suits the serious time trialist, the long-course triathlete, and the road racer with a dedicated aero build who wants a rear disc that has been proven at the professional level. This is a wheel that does exactly what it's designed to do — and doesn't ask you to compromise anything to get there.