Structurally the rim is a tubeless hooked design, allowing it to be used with tubeless or clincher tires. While hookless designs have been pushed by many manufacturers, 3T believes the slight weight reduction of the design isn't worth the potential safety from better tire retention. This thought process carries into another rim bed feature- the Safety Ridge. This ridge sits in the upper rim bed and helps keep the tire bead between the hook/wall, and out of the center channel in case of too low a pressure, especially in case of flat tire. In many such cases a quickly deflated tire will actually pull off the rim as you slow to a stop, exposing the rim surface damage. This applies to road or gravel, and again, 3T feels the weight of such features is well worth it in safety value. While keeping weight reasonably low, the aerodynamic features are ultimately the most crucial, with safety, durability and others lined up behind. At approximately 1640 grams for the set, the Discus 45|40 LTD Wheelset may not be lightest, but remember- it tests the fastest.

Mechanically speaking, the rims are laced to the stout yet lightweight Carbon-Ti X-hubset SP Disc (Center Lock), which are flanged for straight pull spokes. Lacing of the spokes to the rims is ideal, with the specific angle drilling into the rim for ideal alignment, delivering strength and the ability to hold proper tension. To that end the high-tension capable Sapim CX-Ray spokes are a perfect choice. Both wheels features 24 of these lightly bladed, double butted, stainless steel black spokes, laced 2x/2x front and rear. For best hold, durability, and truing Sapim chrome-plated external brass nipples lock everything down. The hubset itself is machined aluminum with light alloy spindles and rear freehub body, excellent contact seals, and an adjustable sealed bearing system. 3T provides a Shimano/SRAM 11-speed or SRAM XDR freehub bodies with the wheelset. This is a disc brake only wheelset, and the hub rotor interface is Center Lock design. Thru-axle set-up is for 12/100mm front, and 12/142mm rear.

The 3T Discus 45|40 LTD Wheelset is a unique option for road or gravel race use, built with high quality and developed for proven performance. The aesthetics are simple and stealthy- perfect for an aero carbon speed demon. For those considering an Exploro RaceMax frameset or narrower, faster Exploro set-up, there is a sibling wheelset- the 45|32 LTD is optimal with smaller tires. The 45|40 LTD is more versatile for road or gravel bike use, and plenty wide for most people, but the same principles apply to both wheelsets. Please keep in mind that when considering rim and tire width combinations that listed tire size rarely matches reality and when you use a wider rim, the shape and overall effect of the tire is generally larger than listed size. See 3T's explanation with the Exploro RaceMax of Radius as Measured (RAM), and Width as Measured (WAM) for full details.