3T Discus 45|40 (Carbon Ti)

Aerodynamics Reimagined for the Modern Gravel Tire

For years, gravel riders were forced to choose: run wide tires for comfort and traction, or narrow tires for aerodynamics. The 3T Discus 45|40 renders that choice obsolete.

Engineered specifically to pair with 35mm to 45mm gravel tires, these wheels feature a staggering 40mm external width. By making the rim as wide as the tire, 3T has achieved a seamless aerodynamic transition that eliminates the "lightbulb" effect. The result? A wheelset that is faster at 30km/h with a gravel tire than many road wheels are with a slick.

The Hub of Excellence: 3T x Carbon-Ti

At the heart of this wheelset lies a partnership with the Italian masters of lightweight engineering: Carbon-Ti.

• Precision CNC-Machining: These hubs are gems of aerospace-grade aluminum and titanium, offering a level of finish that is as beautiful as it is durable.

• Exceptional Engagement: The X-Hub system provides lightning-fast power transfer, essential for punchy climbs and technical off-road sections.

• Unrivaled Weight-to-Strength: By utilizing Carbon-Ti hubs, 3T has kept the rotational mass incredibly low, ensuring these deep-section wheels climb with the agility of a shallow rim.

Engineering Highlights

• The 45mm Depth: The perfect sweet spot for "Realfast" aerodynamics. Deep enough to provide a significant wind-cheating advantage on flat sectors, but shaped to remain stable and predictable in heavy crosswinds.

• Safety & Security: The Discus 45|40 is a hooked rim design. This allows for maximum compatibility across all tire brands and provides the peace of mind to run higher or lower pressures without the limitations of hookless systems.

• Internal Width (29mm): A massive internal bed allows high-volume tires to sit naturally, increasing air volume and allowing you to run lower pressures for increased grip and a "cloud-like" ride quality.

• Hand-Built Quality: Every set is built to exacting tolerances, ensuring a wheel that stays true through the most punishing gravel races in the world.

Technical Specifications

The Shop’s Perspective

"The Discus 45|40 is the single most impactful upgrade you can make to a modern gravel bike. Most carbon wheels look fast, but these are aerodynamically 'correct' for the tires people actually ride. When you pair this rim profile with the jewelry-like quality of Carbon-Ti hubs, you have a wheelset that is as technically superior as it is aesthetically stunning."

Available for Custom Build Consultations

Considering these for your Exploro or a custom project? We offer professional tubeless setup with your choice of premium gravel rubber. Visit us in-store to feel the weight and see the Carbon-Ti craftsmanship in person.