3T DISCUS 45 | 40 LTD Chris King

Brand: 3T

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THE WORLD’S WIDEST AERO WHEELS
- 28''/700c Rim
- 40mm wide, 45mm deep
- Tubeless-Ready Clincher
- Sapim CX-Ray
- Chris King hubs (Industry Nine, Carbon-Ti as options)
- 10/11s Shimano, and SRAM XDR driver body included
- 1665g... Show more

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3T Discus 45 | 40 LTD

Realfast Aerodynamics

We design for the real world, and for the gravel roads in that world, people want to use 700x35-40c tires. It’s useless to put a narrow aero rim behind such a tire. You’d be adding the weight without the aero benefit of such a wheel as the airflow never really “sees” the rim. After testing two dozen prototype wheels in the tunnel, the Discus 45 | 40 LTD was born. 45mm deep for good aerodynamics without excessive cross wind vulnerability. 40mm wide to match up those 35-40mm tires. The result is speed never seen before on gravel roads. And while the shape is optimized for the 3T Exploro, the Discus 45 | 40 LTD makes any gravel bike faster.

Nosetail design

Similar to the Discus 45 | 32 LTD, the Discus 45 | 40 uses the NoseTail design to squeeze 60mm deep rim performance in a 45mm profile. By definition rim design is a compromise, because it whatever shape is aerodynamic on the front half doesn’t work so well 180 degrees later when it’s backwards. The NoseTail shape was developed by the legendary Dave Kennedy (an aerodynamics professional for over 50(!) years) and 3T’s Head of Design Gerard Vroomen. The NoseTail actually sacrifices some performance on the front half of the wheel in favor of working better on the back half. Not only do the two effects cancel each other out, but the resulting shape also requires less rim depth and better guides the airflow from the rear of the front wheel onto the downtube. This is particularly helpful on the Exploro RaceMax where the downtube is positioned in close proximity to the front tire.

HUGE INNER WIDTH: At 29mm, the Discus 45 | 40 has by far the widest inner width of any (aero) gravel rim. That means less tire flop, so your cornering is more precise as the tire doesn’t roll over the rim’s edge. A big inner width also means you can run a lighter, narrower tire for the same WAM.

HOOKED ON SAFETY: Hookless designs save a few grams and are much easier to produce in carbon. But humans went to the moon not because it was easy, but because it was hard. Surely then the bike industry can put hooks on rims for ultimate safety and to better distribute impact loads on rim & tire.

SAFETY RIDGE: With tubeless tires, rolling resistance is lower and flats are very rare. But when you do flat your road or gravel tire, a safety ridge keeps the tire on the rim for safety and to avoid damage (they're often skipped to save some weight & make manufacturing easier but again, we relish the challenge).

SEALANT-RESISTANT: You may have heard of wheels destroyed by aggressive sealant. That’s why we use chrome-plated brass nipples (much more durable than alloy) with stainless steel washers & spokes. For best results, we recommend avoiding alkaline sealants with ammonia or sodium hydroxide.

FREEHUB OPTIONS: The Discus 45 | 40 wheelset is available with standard and xD-R drivers (select the version you need when ordering). There is also a conversion kit available should you want to switch or upgrade to a different driver system in the future.

Specifications 3T Discus 45 | 40 LTD

28''/700c Rim
40mm wide, 45mm deep
Tubeless-Ready Clincher
Sapim CX-Ray
Chris King hubs (Industry Nine, Carbon-Ti as options)
10/11s Shimano, and SRAM XDR driver body included
1665g

Brand: 3T
Tire size: 28''
Tire type: Clincher/Tubeless Ready
Number of spokes: 24 / 24
Brake type: Center Lock Disc
Rim width: 40mm
Rim height: 45mm
Rim material: Carbon

Shipping conditions

Free shipping: For orders over €75 (Netherlands & Belgium)
Delivery time: Within 1-2 business days, depending on product availability.
Shipping partner: Delivery via PostNL or DPD.
Tracking: Track your order with a track & trace code.
International shipping available. (PostNL, DPD, UPS or DHL Express)
Return policy: Free returns within 14 days in the Netherlands, provided items are in their original condition and packaging.

I ordered. And now?

After your online order with BikeSuperior, we get straight to work. We confirm your order by e-mail and start collecting the chosen products. Once everything is ready, we assemble the bike or parts if necessary. Then your order will be carefully packed and shipped. You will receive a track & trace code to follow the delivery. Have you chosen a custom build? Then we will keep you informed about the build process, from frame selection to assembly, so you will know exactly when your unique bike is ready.

Behind the scenes at BikeSuperior

The delivery process

After your order, our warehouse team gathers all the necessary parts and prepares them for the workshop. In the workshop, the bike is fully assembled and extensively tested. Then the bike goes to the packing station in the warehouse, where it is carefully packed. Accessories are added to the box, after which the bike is shipped to a destination in the Netherlands or worldwide. This way, we make sure your bike arrives safe and complete.