A well-loved favorite for its overall ride quality, the Ksyrium road wheel has long been considered a smart way to upgrade your bike. Now that it's available in a disc-brake version with our UST Road Tubeless technology, it's even smarter. For a reasonable price, you get all performance and dependability that go with the Ksyrium name plus the added benefits of tubeless, including less rolling resistance, a smoother ride quality, and a reduced risk of punctures. There's no other road tubeless system that's easier to use. Our UST rims and tires make it simple to change, mount, and inflate tires. The wide rims (19mm internal) are optimized for 28mm tires (and still compatible with 25mm), perfect for tackling a variety of road terrain with efficiency and control. Our patented ISM (Inter Spoke Milling) technology reduces weight for fast climbing and instant acceleration. The system is engineered specifically for disc brakes, with plenty of lateral stiffness for precise handling and total axle and freewheel compatibility. If you're looking for an upgrade that can immediately boost your road bike's performance, look no further. Roll faster and smoother with a reduced risk of punctures - No tube means no friction, so less rolling resistance and higher speeds. - Ride with lower tire pressure for smoother ride and a reduced risk of punctures. - UST system offers a perfect union between tire and wheel, so installation, removal, and maintenance are easy. Lightweight rims for easier climbing and faster acceleration - ISM machined, welded rims. - 19mm internal rim width for low rolling resistance and extra comfort with 28mm tires. Lateral stiffness boosts agility and efficiency - Optimized bearing placement - Straight-pull bladed double butted spokes deliver optimal stiffness.
The Cosmic Elite is a perfect entry point into high-level race performance. This UST Road Tubeless system delivers a smoother ride and improved puncture resistance while retaining a lightweight feel for climbing and accelerating. By removing the tube, we've also removed friction—so there's less rolling resistance, which means it requires less energy to reach higher speeds. The UST system, including the sealant that makes the tires more resistant to punctures, is also 40g lighter than a traditional tube and tire system. Wind tunnel testing led us to create a 30mm deep rim that optimizes aero performance and improves stability in crosswinds. The alloy rim benefits from our unrivaled experience creating light yet strong rim extrusions. We do this by carefully tuning the thickness of the rim wall to hit the sweet spot between stiffness, strength, and weight. It's also engineered specifically for disc brakes with steel-bladed straight-pull spokes that are stronger than traditional J-bend spokes, all connected to our strongest hub platform, running on smooth, QRM bearings. Roll faster and smoother with a reduced risk of punctures - With UST Road Tubeless, no tube means no friction, so you experience less rolling resistance and higher speeds. - UST Road Tubeless lets you ride with lower tire pressure for smoother ride and a reduced risk of punctures. - Our patented UST system offers a perfect union between tire and wheel, so installation, removal, and maintenance are easy. Added speed and efficiency for sprints and solo riding - 30mm deep aero rim profile - Ultra bladed straight pull spokes - Aerodynamic hubs Disc-brake technology gives you added braking control - Engineered with a disc-brake specific rim profile - 12mm thru-axle hub front and rear, convertible to quick release - Compatible with Center Lock rotors and XD-R cassette
This wheel system incorporates our most cutting-edge technologies to give you a proven aero advantage on the road. Built on a new NACA profile rim that's 64mm deep and 26mm wide, the rim provides an airfoil that is proven through wind-tunnel testing to produce the lowest possible drag without sacrificing its stability. It features a wide, rounded shape that minimizes the effects of crosswinds. The rims are engineered with our iTgMax carbon rim technology, which uses a laser treatment to remove the first layer of resin in the brake track. This innovative process improves braking performance and reliability in dry or wet conditions without compromising strength. This version features our all-new UST Road Tubeless technology, which offers several benefits. First, it improves rolling efficiency up to 15% compared to non-tubeless tires at equal air pressure. And, it improves overall ride quality by allowing you to run lower pressures for smoother handling and better control. The highest rolling efficiency of any tubeless road wheel system - New UST Road Tubeless improves rolling resistance about 15% at equal tire pressures. - You can run lower tire pressure for a smoother ride quality. - Reduced risk of puncture with new Yksion Pro UST tubeless tires - Most user-friendly tubeless road system makes installing and removing tires easy. Get unbeatable aero performance without sacrificing stability - NACA 64mm airfoil rim features a wide, rounded shape for low drag and crosswind stability. - 26mm rim width offers smooth tire integration. Accelerate, corner, and sprint faster with lighter, stiffer wheels - One of the lightest wheelsets in its category - 64mm high, 26mm wide full-carbon rim offers maximum power transfer.
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