Making up about 50% of your total race time, the bike portion of a triathlon is where equipment choices can make the difference between first and fifth, and no other equipment choice will save you more time than a disc wheel. While traditionally-shaped disc wheels are faster than their spoked counterparts, the Roval 321 Disc for disc brakes turns conventional design on its head, creating the fastest wheel on the planet. Disc wheels often fall into two categories—a completely flat shape, with structure coming from carbon fiber and a honeycomb-foam filling, or a spoked wheel that's been faired with a carbon fiber cover. In our quest to break traditions, the 321 uses a single layer of 1k carbon fiber on each side of the wheel, and it all comes together at the brake track bridge. This kind of carbon fiber is rarely used in bicycle components due to its high manufacturing cost, but it offers a bevy of performance benefits. This coveted carbon is much lighter than other layups, like 3k and 12k, and it can only be laid by the most skilled of carbon fiber craftsmen. It's complicated, but the payout is worth it, as it delivers a supple ride and one of the lightest disc wheels available. And in the real world, this means that it'll spin-up quickly and reduce fatigue over the length of the course. Stiffness is often the “hot-topic” in the disc wheel world, but we think it’s an interesting conversation. It's long been thought that efficient power transfer and high stiffness are directly correlated, but through extensive field-testing, we've determined that this isn't the case at all. In fact, our initial disc was so stiff that, under power, it wouldn't flex with the frame and this caused brake rub. This wrongly creates the perception of a flexy wheel, when really, the wheel is actually too stiff. In order to solve the brake rub problem, we first designed our optimal aero shape and then worked on our internal stiffness targets to fit within what we consider to be a desirable frame stiffness. And while light overall weight was a development priority, our focus was aerodynamics. Through hours of Computational Fluid Dynamics (CFD) and testing in the Win Tunnel, we developed a never-before-seen shape that's optimized to work with a tire for on-bike airflow. What this translates to is an all-carbon disc wheel that, on the non-drive-side, has a shape that's as aerodynamic as our current understanding allows, and a drive-side shape that's as aerodynamic as the wheel-dish and derailleur clearance will allow for. To save every possible watt, we've also added CeramicSpeed bearings and DT Swiss 240 hub internals into our hub. Each 321 Disc wheel is also 2Bliss Ready right out of the box and comes with a padded wheel bag, quick-release, and tubeless valve stem. Designed for the most uncompromising athletes in the world, with engineering to match, the 321 Disc is the world's most advanced disc wheel for your race against the clock. - Rim Type: Full carbon clincher, 2Bliss Ready - Rim Material: Carbon - Braking Surface: Disc brake only - Rim Depth: Solid Disc - Rim Width: 19mm internal, 27.3mm external (at brake track) - Rear Hub: Roval Disc 142x12mm, CeramicSpeed bearings, DT Swiss 240 internals, 11-speed - Assembly Method: Handmade - Extras: Roval padded wheel bag, Roval tubeless valve, Roval valve pocket covers - Weight: 1015g
One wheel to rule all roads. Road light, off-road tough, smooth as butter, Terra CLX wheels bring leading-edge performance to the diverse needs of mixed-terrain rides. These are the lightest gravel wheel on the market. They sport 25mm internal-width rims, deliver a durable and exceptionally smooth ride, are compatible with 28-42mm tires at up to 90 PSI, and they come with a lifetime warranty and no-fault crash replacement. - Rim Type: Carbon Clincher, tubeless-first - Rim Material: Advanced Carbon Composite - Rim Width (internal): 25mm - Rim Depth: 32mm - Front Spoke Pattern: Radial/Two-cross (2:1) - Spoke Count: 21 - Spoke Type: DT Swiss Aerolite T-head - Nipple Type: DT Swiss Pro Lock Alloy hexagonal - Spoke Length: Right/Left: 276mm/274mm - Front Hub: Roval AFD1, Center Lock, 12mm thru-axle end cap - Assembly Method: Handbuilt - Extras: Roval padded wheelbag, Roval tubeless rim tape and valves (pre-installed) - Wheelset Weight (front and rear with rim tape and tubeless valves): 1296g
At the helm of taking traction, stability, speed, and stiffness to new heights stands the Roval Traverse Fattie 38 27.5 wheels. And while, yes, they feature a lightweight alloy rim and a quality build, what turns them into descending machines is the 38mm internal rim width. Let's find out why. The reason behind this is easy: Aside from the lightweight and ultra-rugged E5 alloy construction, the combination of the rim width with wider hub flanges creates an increase in plus-sized tire volume. This means that you get more suppleness in the ride quality. But not only this, the ample width also better supports the tire, so you'll experience less "burping" when riding tubeless, as well as a drastic increase in traction. Along with light overall weight, stiffness, and durability, another top priority for the Traverse was ease of use. First off, we got rid of the creaky straight-pull spokes and corrosion-prone alloy nipples. Next up, we landed on 28 J-bend spokes, for front and rear wheels, that are all the same length—making it easy to find replacements if needed. And finally, we engineered a new hub design, with a wider profile and higher flange to aid in overall stiffness. These aren't just a one-trick pony, though. At the front hub, you'll get a 15x110mm thru-axle (end cap options included), and at the rear, the 148mm hub features DT Swiss internals for lightning-fast engagement and acceleration. And to top everything off, these wheels are hand-built to ensure the perfect tension and a long lifespan. Whether you've just picked up a new 27.5+ bike, or you're curious to try out high-volume tires, like a 2.8", on your Boost™-spaced 29er, the Traverse 38 Fattie 27.5 wheels will leave you impressed after the first spin.
In the early design phases of our Traverse Fattie 29, we recognized that the number of aluminum wheels that had the prowess to both shred rowdy descents and to provide the efficiency required of our Northern California testing grounds' relentless climbs were far and few between. We also came to realize that trail riders expect certain features in a proper, send-it-ready wheelset. And for the price, we found that alloy hit many of these expectations, while also keeping enough jingle-jangle in your wallet for a post-ride beverage. Along with light overall weight, stiffness, and durability, another top priority for the Traverse was ease of use. First off, we got rid of the creaky straight-pull spokes and corrosion-prone alloy nipples. Next up, we landed on 28 J-bend spokes, for front and rear wheels, that are all the same length—making it easy to find replacements if needed. And finally, we engineered a new hub design, with a wider profile and higher flange to aid in overall stiffness. We took the traditional 19- to 23-millimeter standard and moved it out to what we found worked best in testing—a whopping 30mm “Fattie” width. A wide rim does a variety of things for ride performance—it better supports the tire for increased confidence and grip, it affords you the ability to run lower pressures, and it spreads impact out over a larger surface area to reduce the risk of damage. We also added our Zero Bead hook design to the mix, and this ultimately aids in preventing “burps” during hard cornering, while also making tubeless set up quick and easy. After developing what we found to be the perfect alloy trail wheels, we went farther down the perfection path, hand-lacing the rims to our own alloy hubs that allow for the same spoke length throughout the entire wheelset, via 28 DT Swiss Revolution J-Bend spokes and Pro Lock nipples. Inside our hubs, you'll find sealed cartridge bearings and DT Swiss 360 rear internals that'll keep you rolling smoothly for miles. We also wanted to ensure that each wheel was built correctly, so we built them by hand. Each wheelset comes packaged with a SRAM XD-driver and a tubeless valve stem in order to make tubeless set-up a touch easier. Please note that Shimano freehubs are sold separately.
Been eyeing our new Airless-tire-equipped Alibi, but already have a trusty commuting steed? Featuring our Nimbus 700x38C Airless tires, the Alibi Sport Wheelset lets you reap the benefits of Airless tires on your beloved ride. With a 7-/8-/9-speed compatible hub, a machined braking surface, and double-wall rims, you'll spend more time riding and less time doing maintenance. - Double-wall rims are strong and durable. - Machined braking surface creates superior stopping power in any condition. - 7-/8-/9-speed cassette rear hub provides plenty of gearing options for climbing and riding the flats. - Standard equipment on Alibi Sport bike. - Quick-release/Alloy hubs w standard cassette body. - Comes with Nimbus 700x38C Airless tires. - Rim brake only. - Perfect for upgrading hybrids to Airless technology. - Sold as a set.
Stan's No Tubes' Presta Removable Valve Core is a replacement valve core for Stan's No Tubes Presta valve stems and Presta valve equipped rim strips.
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