Corima C+ WS TT Disc Brake Clincher Disc Wheel

The Corima C+ WS TT Disc Brake Clincher Disc Wheel is built around a single premise: in time trial and triathlon racing, the rear wheel is not a supporting character. It is the aerodynamic anchor of the entire setup, and it demands to be treated that way. Corima has been engineering carbon wheels for professional competition for decades, and the C+ WS TT represents their answer to a specific question — what does a full disc rear wheel look like when it has to work with disc brakes and clincher tires without conceding an inch on aerodynamic performance?

A full disc rear wheel works because it eliminates the drag-generating turbulence that spoked wheels produce. There are no spokes to interrupt airflow, no gaps to create pressure differentials — just a continuous carbon surface that slips through the air with a consistency no conventional deep-section wheel can match. Corima's construction process is developed in the wind tunnel, producing a disc profile shaped to remain manageable in the crosswind conditions that are a constant fixture of real race courses, not just straight-line laboratory runs. The tradeoff with any disc wheel is always rotational inertia — mass at the rim matters more than mass at the hub — so Corima's carbon layup is engineered to keep weight in check without compromising the structural rigidity a disc wheel needs to transmit power cleanly under load.

The disc brake-compatible format places this wheel squarely in the modern era of time trial and triathlon equipment. Hydraulic disc brakes have become standard specification on high-end TT frames, and the C+ WS TT is built to integrate with those systems without requiring any aerodynamic compromise. The clincher tire format extends its practicality further — you get the race-day aerodynamic advantage of a full disc rear wheel alongside the logistical straightforwardness of clincher tires, which are easier to source, easier to change, and easier to manage across a race weekend. Three driver options — Campagnolo, Shimano/SRAM 11-speed HG11, and XDR — ensure compatibility with the drivetrains most commonly found on contemporary TT bikes.

Corima C+ WS TT Disc Specs at a Glance

• Brand: Corima
• Wheel Type: Full disc rear wheel
• Tire Compatibility: Clincher
• Brake Type: Disc brake
• Construction: Carbon fiber
• Drivetrain Compatibility: Campagnolo, HG11 (Shimano/SRAM 11-speed), XDR
• Intended Use: Time trial and triathlon racing
• Color: Black

Design Benefits

1. Full Disc Aerodynamics: The continuous carbon disc surface removes the primary source of aerodynamic drag on a conventional wheel — the spokes. By eliminating the pressure disturbances that rotating spokes create, the C+ WS TT allows air to pass cleanly across the rear of the bike, reducing drag in a way that compounds over the full length of a time trial or triathlon bike leg. This is the fundamental aerodynamic advantage that makes disc wheels a fixture on podiums at the highest levels of the sport.
2. Disc Brake Integration Without Compromise: Building a full disc wheel around disc brake compatibility requires structural engineering that rim brake disc wheels simply don't need to address. The C+ WS TT is designed to handle the braking forces generated by hydraulic and mechanical disc systems while maintaining the carbon structure and aerodynamic profile that define its purpose. No aerodynamic penalty, no structural shortcut — it is a disc wheel built for the equipment standard that now dominates elite TT racing.
3. Clincher Practicality at Race Weight: Tubular disc wheels have traditionally been the choice at the front of the field, but the operational demands of clincher tires are real — particularly for age-groupers, club racers, and athletes without a dedicated support crew. The C+ WS TT delivers the aerodynamic profile of a dedicated race disc wheel in a clincher format, meaning pre-race tire pressure checks, mid-race mechanicals, and post-race logistics are all significantly more straightforward than with tubular equivalents.
4. Wind Tunnel-Developed Profile: Corima's engineering process is rooted in wind tunnel testing rather than theoretical modeling alone. The disc profile of the C+ WS TT is shaped to perform not just in ideal straight-line conditions but in the variable crosswinds that define real race environments. A full disc rear wheel that becomes unmanageable in a crosswind is a liability rather than an asset — Corima's approach is intended to produce a wheel that is fast and predictable across the range of conditions a rider is likely to encounter.
5. Broad Drivetrain Compatibility: Stocking a single race wheel across different drivetrain standards used to mean choosing one and excluding the others. The C+ WS TT is available with Campagnolo, Shimano/SRAM HG11, and SRAM XDR drivers, covering the primary groupset standards currently in use on TT and triathlon bikes. You swap the driver, not the wheel.

Final Take

The Corima C+ WS TT Disc is a wheel for riders who are serious about time trial and triathlon performance and are running a modern disc brake setup. It is not a crossover product or a wheel hedging its bets between disciplines — it is a full disc rear wheel designed to do one thing and do it without concession. If you're chasing clock-time on a TT course or a triathlon bike leg and you need a clincher-compatible disc rear wheel built for disc brakes, this is where that search ends.