Corima CN Tubular Disc Wheel

The Corima CN Tubular Disc Wheel is a rear wheel with a single, unambiguous purpose: eliminating aerodynamic drag at the source. Corima has been building carbon wheels since 1987, well before disc wheels became a category that every brand felt compelled to enter, and that history shows in the CN's construction. This is a wheel for riders who have already committed to the time trial or triathlon pursuit — who have made their peace with the tradeoffs a disc wheel demands and want the purest aerodynamic return on that decision.

A full disc wheel occupies a different performance tier than even the deepest-section spoked rim. No matter how refined the aerodynamic profile of a spoked wheel, gaps remain — between spokes, at crossing points, through the open structure between hub and rim. The CN removes all of that. Its monocoque carbon fiber construction means the disc face is not a fairing or cover applied over a conventional wheel structure. The carbon itself is the wheel — a single formed piece that presents an unbroken surface to oncoming air. That structural integrity also contributes to stiffness and power transfer, so nothing is sacrificed in the pursuit of clean airflow.

Paired with a tubular tire, the CN builds on that aerodynamic foundation with a tire interface known for low rolling resistance and ride quality that doesn't blunt efficiency. Tubulars allow you to run optimal pressure for your weight and course conditions with precision — on a flat, fast time trial or triathlon course, that combination of a sealed disc profile and a dialed-in tubular setup is as focused as rear-wheel engineering gets. This is not a wheel you reach for on a whim. It's a wheel you build a race around.

Corima CN Tubular Disc Wheel Specs at a Glance

• Manufacturer: Corima
• Wheel Type: Full disc rear wheel
• Tire Type: Tubular
• Construction: Monocoque carbon fiber
• Wheel Position: Rear
• Compatibility: Shimano / SRAM 10-speed
• Intended Use: Time trial, triathlon
• Brand Heritage: Carbon wheel manufacturing since 1987

Design Benefits

1. Uninterrupted Aerodynamic Profile: A full disc surface eliminates every aerodynamic disruption that a spoked wheel introduces — no gaps, no spoke crossings, no structural voids between hub and rim. The result is the cleanest rear-wheel airflow profile available, which is why disc wheels remain the standard choice at elite time trial and triathlon competition worldwide.
2. Monocoque Carbon Structure: The CN is not built like a conventional wheel with a disc cover added for aesthetics or aero benefit. The monocoque carbon construction means the disc face is the structure — one formed piece that handles load, transfers power, and manages aerodynamic forces as a unified whole. That integrity translates directly to stiffness underfoot when you're pushing hard on the pedals.
3. Tubular Tire Compatibility: Tubulars offer a performance profile that suits this wheel's intended environment well — lower rolling resistance when inflated to optimal pressure, a ride quality that remains supple without sacrificing efficiency, and the ability to fine-tune inflation with precision. On a flat, high-speed course, the combination of a disc wheel and a well-chosen tubular tire compounds aerodynamic gains with mechanical efficiency.
4. Corima's Manufacturing Depth: Corima's involvement in carbon wheel production predates most of the brands currently operating in this segment. That institutional knowledge shapes how the CN is engineered — not just the aerodynamic form, but the carbon layup decisions, the structural tolerances, and the quality control that comes from decades of producing wheels at the highest levels of the sport.

Final Take

The Corima CN Tubular Disc Wheel is built for time trialists and triathletes who want the maximum aerodynamic return a rear wheel can deliver — riders racing on flat, fast courses where every second of drag reduction is measurable. If you're building a dedicated race setup around a specific event or course profile, the CN belongs in that conversation. It doesn't try to be versatile. It tries to be fast, and on its terms, it succeeds.