700c, 27-Inch & 650c

- Position Front - Wheel Diameter/ISO 700C / 622 - Axle Type Bolt-on - Hub Spacing 100mm - Wheel-Brake Comp. Rim - Freehub Body - - Wheel Tire Type Clincher - Rim Material Aluminum - Rim Construction Double wall - Rim Internal Width 13.9mm - Rim inner width range 0-21.9mm - Rim Color Black - Rim Drilling 32 - Hub Model Formula TH-50 - Wheel Weight - - Spoke Type DT Champion - Valve Presta - Rim External Width 19.6mm - Depth 22mm - Rim Model Alex DA22 - Skewers Included Yes

- Position Rear - Wheel Diameter/ISO 700C / 622 - Axle Type QR - Hub Spacing 135mm - Wheel-Brake Comp. Rim - Freehub Body Freewheel - Wheel Tire Type Clincher - Rim Material Aluminum - Rim Construction Double wall - Rim Internal Width 18.4mm - Rim inner width range 0-21.9mm - Rim Color Black - Rim Drilling 36 - Hub Model Formula FM-31-QR - Wheel Weight - - Spoke Type Stainless - Valve Schrader - Rim External Width 24.4mm - Depth 16mm - Rim Model Alex DM18 - Skewers Included Yes

- Position Rear - Wheel Diameter/ISO 700C / 622 - Axle Type QR - Hub Spacing 130mm - Wheel-Brake Comp. Rim - Freehub Body Shimano HG - Wheel Tire Type Clincher - Rim Material Aluminum - Rim Construction Double wall - Rim Internal Width 13.4mm - Rim inner width range 0-21.9mm - Rim Color Black - Rim Drilling 32 - Hub Model Shimano Sora FH-RS300 - Wheel Weight - - Spoke Type DT Stainless - Valve Presta - Rim External Width 19.6mm - Depth 19.7mm - Rim Model Alex R390 - Skewers Included Yes

- Position Front - Wheel Diameter/ISO 700C / 622 - Axle Type QR - Hub Spacing 100mm - Wheel-Brake Comp. Rim and Disc IS 6-bolt - Freehub Body - - Wheel Tire Type Clincher - Rim Material Aluminum - Rim Construction Double wall - Rim Internal Width 19mm - Rim inner width range 0-21.9mm - Rim Color Black - Rim Drilling 36 - Hub Model Formula DC-20 - Wheel Weight - - Spoke Type Stainless - Valve Schrader - Rim External Width - - Depth 20mm - Rim Model Evo E-Tour 19 - Skewers Included Yes

Performance Upgrade Made Easy The C38 brings carbon fiber high performance to the real world. It's a versatile all-rounder equally at home crushing gravel washboards and summiting alpine passes. Optimized for use with modern wide tires, providing the right amount of sidewall support to facilitate surefooted handling in all conditions, the C38 wheelset is a great handling, lively climbing, robust all-road performer that also aerodynamically outperforms many deeper, aero-specific rims that cost twice as much. Carbon wheels are a true performance upgrade to any bike, but too often the price tag puts them out of reach. The Rapide C38 shatters that barrier and brings a class-leading Roval carbon rim and DT Swiss reliability together to provide riders with the best performance carbon wheel per dollar.

The best price on the market for a wheel meant to be ridden. Single-wall rims and loose-ball hubs that come out of the box round and true.

An affordable freewheel-compatible wheel with a durable 36H single wall construction and premium Stainless Steel spokes to fit older/classic road bikes built around the 27-inch (630mm ISO) wheel size. - Compatible with both 27 x 1-1/4 and 27 x 1-3/8 tires (same ETRTO - 630mm) - Alex Rims AP18 pinned construction classic box-section single-wall rim brushed sidewalls a generous 18mm internal width for compatibility with a wide range of tire widths - Joytech nutted steel hubs w/serviceable cup and cone bearings - Conventional thread-on freewheel fitting (6/7sp compatible) — axle can be respaced for 5sp compatibility - Straight gauge 2.0mm SUS304 Stainless Steel spokes (silver) w/12mm brass nipples (silver) - Weight: 1313g

An affordable, single-wall 700c classic-looking freewheel-compatible wheel with premium Stainless Steel spokes and a durable 36H construction. - Alex Rims AP18 pinned construction classic box-section single-wall rim brushed sidewalls a generous 18mm internal width for compatibility with a wide range of tire widths - Joytech nutted alloy hubs w/serviceable cup and cone bearings - Conventional thread-on freewheel fitting (8/9/10sp compatible) — axle can be respaced for 5/6/7sp compatibility - Straight gauge 2.0mm SUS304 Stainless Steel spokes (silver) w/12mm brass nipples (silver) - Weight: 1237g

An affordable, single-wall 700c classic-looking freewheel-compatible wheel with premium Stainless Steel spokes and a durable 36H construction. - Alex Rims AP18 pinned construction classic box-section single-wall rim brushed sidewalls a generous 18mm internal width for compatibility with a wide range of tire widths - Joytech nutted alloy hubs w/serviceable cup and cone bearings - Straight gauge 2.0mm SUS304 Stainless Steel spokes (silver) w/12mm brass nipples (silver) - Weight: 1130g

A durable & classic 32H 700c road wheel with a new-school 18mm internal width rim and full 8/9/10/11sp road cassette compatibility. - Lightweight (485g) pinned construction low-profile double wall rim w/CNC machined sidewalls, wear indicator, and anodized matte black finish - Joytech alloy QR hubs w/serviceable cup and cone bearings - 11sp Shimano road steel freehub body w/included 1.85mm freehub spacer for full 8/9/10/11sp compatibility - Reinforced head plain gauge 14G/2.0mm SUS304 Stainless Steel spokes (black or silver) / 12mm brass nipples (silver) - 32H/3X lacing - Presta drilling - QR levers & high-pressure rim tape included - Not tubeless compatible - Weight: 1235g

A thru-axle 700c disc wheel with convenient dual Center Lock/6-Bolt disc that is perfectly suited to modern road, CX, or gravel applications. - A lightweight (470g), pinned construction double-wall rim with new-school 23mm internal width, tubeless compatibility, offset/asymmetrical construction, and hookless bead profile - Asymmetric rims w/offset spoke holes for better triangulation of spoke angles and balance of tensions in a wheel build, resulting in a stronger, stiffer, more compliant, and more reliable wheel - Joytech thru-axle alloy Center Lock hubs w/serviceable cup and cone bearings - Ships with CL-to-6-Bolt adapter and lockring full dual Center Lock/6-Bolt compatibility - Reinforced head plain gauge 14G/2.0mm SUS304 Stainless Steel spokes (black) w/12mm brass nipples (black) - 32H/3X lacing - Presta drilling - High-pressure rim tape included (non-tubeless) - Tubeless Compatible - Weight: 948g

A durable 32H aero track wheel in stealth black finish with new-school 17mm internal width thats fast enough for the velodrome and tough enough for the streets. - Pinned construction double-wall rim w/aero 30mm deep profile, wear indicator, and anodized matte black finish - CNC sidewalls with post-anodized finish for clean brakeless all-black stealth looks - Joytech high flange nutted axle 100mm alloy nutted hub w/100% serviceable cup and cone bearings - Reinforced head plain gauge 2.0mm SUS304 Stainless Steel spokes w/12mm brass nipples - 32H/3X lacing - Presta Drilling - Axle nuts & high-pressure rim tape included - Weight: 1082g

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 321 disc turns conventional design on its head, creating the fastest wheel available. 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 long haul. 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 new-to-category 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 out of the box and comes with a padded wheel bag, quick-release, tubeless valve, and SwissStop Black Prince brake pads. 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: Carbon clincher, 2Bliss Ready - Rim Material: Carbon - Braking Surface: Carbon Fiber - Brake Track Height: 12mm - Rim Depth: Solid Disc - Rim Width: 19mm internal, 27.3mm external (at brake track) - Rear Hub: Roval Disc, CeramicSpeed bearings, DT Swiss 240 internals, 11-speed - Assembly Method: Handmade - Extras: Roval padded wheel bag, Roval steel quick-release, Roval tubeless valve, SwissStop Black Prince brake pads, Roval valve pocket covers - Weight: 1000g

The all-rounder of the new DURA-ACE wheel lineup, the C50 is both lighter than the previous C40 model and nearly as aerodynamic as the previous C60. It's a wheelset at home in a wide range of conditions. From time trials to criteriums, on rolling terrain or attempting a personal best, the new C50 is the ideal wheel for spirited road riding. The perfect blend of low weight and aerodynamic performance, the all-new DURA-ACE C50 features an updated all-carbon tubeless rim and new hub design that drops weight while enhancing rigidity. - All-round tubeless wheels with balanced aerodynamics and lightweight materials - 50 mm height full carbon rim - Internal rim width: 21 mm

The all-rounder of the new DURA-ACE wheel lineup, the C50 is both lighter than the previous C40 model and nearly as aerodynamic as the previous C60. It's a wheelset at home in a wide range of conditions. From time trials to criteriums, on rolling terrain or attempting a personal best, the new C50 is the ideal wheel for spirited road riding. The perfect blend of low weight and aerodynamic performance, the all-new DURA-ACE C50 features an updated all-carbon tubeless rim and new hub design that drops weight while enhancing rigidity. - 50 mm height full carbon rim - Internal rim width: 21 mm - DIRECT ENGAGEMENT - Compatible only with Shimano road 12-speed cassette sprockets

Perfect for flatter courses and time trials, the DURA-ACE C60 prioritizes aerodynamic efficiency and lateral rigidity. The new hub design, stiffer spokes, and deep section rim are designed specifically to allow you to push harder in corners and ensure that every bit of your effort is translated into forward motion. Like the entire DURA-ACE wheel family, the new C60 started with a blank slate. Different from the C36 and C50, the C60 has a specific front hub design using Shimano's OPTBAL 2:1 spoke pattern to enhance lateral rigidity. The C60 also receives stiffer spokes, 1.8 mm instead of 1.5 mm. Tested by our professional athletes, this focus on the lateral rigidity of C60 allows you to push harder in corners and when maneuvering at higher speeds. Lastly the new wind-tunnel tested, deep section rims feature a faster, more stable cross-section that time trialists, triathletes, and sprinters alike will enjoy. - HR: High-Rigidity ver. +20% increased lateral rigidity for powerful riders and sprinters - 60 mm height full carbon rim - Internal rim width: 21 mm

Perfect for flatter courses and time trials, the DURA-ACE C60 prioritizes aerodynamic efficiency and lateral rigidity. The new hub design, stiffer spokes, and deep-section rim are designed specifically to allow you to push harder in corners and ensure that every bit of your effort is translated into forward motion. Like the entire DURA-ACE wheel family, the new C60 started with a blank slate. Different from the C36 and C50, the C60 has a specific front hub design using Shimano's OPTBAL 2:1 spoke pattern to enhance lateral rigidity. The C60 also receives stiffer spokes, 1.8 mm instead of 1.5 mm. Tested by our professional athletes, this focus on the lateral rigidity of C60 allows you to push harder in corners and when maneuvering at higher speeds. Lastly the new wind-tunnel tested, deep section rims feature a faster, more stable cross-section that time trialists, triathletes, and sprinters alike will enjoy. - HR: High-Rigidity ver. +20% increased lateral rigidity for powerful riders and sprinters - 60 mm height full carbon rim - Internal rim width: 21 mm - DIRECT ENGAGEMENT - Compatible only with Shimano road 12-speed cassette sprockets

With a shallow-depth aero profile and lively acceleration, the ULTEGRA R8170 C36 wheelset is a climber's delight that delivers performance every road rider will appreciate. With the speed and efficiency of tubeless tires, the everyday performance of a shallow, aero profile carbon rim, and the convenience of 11 and 12-speed compatibility, the new ULTEGRA R8170 C36 wheelset is an upgrade for any road bike. - 36 mm height full carbon rim - Internal rim width: 21 mm - Shared rim profile with R9200 DURA-ACE wheels - Improved aerodynamics

With a shallow-depth aero profile and lively acceleration, the ULTEGRA R8170 C36 wheelset is a climber's delight that delivers performance every road rider will appreciate. With the speed and efficiency of tubeless tires, the everyday performance of a shallow, aero profile carbon rim, and the convenience of 11 and 12-speed compatibility, the new ULTEGRA R8170 C36 wheelset is an upgrade for any road bike. - 36 mm height full carbon rim - Internal rim width: 21 mm - Shared rim profile with R9200 DURA-ACE wheels - Improved aerodynamics

Balancing aerodynamics, weight, and affordability, the new ULTEGRA R8170 C50 wheelset is sure to inspire action on your group ride with its all-new tubeless carbon rim and updated, 11 and 12-speed compatible hub. Summiting climbs, carving descents, or cruising the flats, the new C50 is the jack of all trades among the new ULTEGRA R8170 wheel lineup. The tubeless, carbon rim features a 21 mm internal width that pairs nicely with wider, modern tires while the HYPERGLIDE cassette body is compatible with 11 and 12-speed cassettes. - 50 mm height full carbon rim - Internal rim width: 21 mm - Shared rim profile with R9200 DURA-ACE wheels - Improved aerodynamics

Balancing aerodynamics, weight, and affordability, the new ULTEGRA R8170 C50 wheelset is sure to inspire action on your group ride with its all-new tubeless carbon rim and updated, 12 and 11-speed compatible hub. Summiting climbs, carving descents, or cruising the flats, the new C50 is the jack of all trades among the new ULTEGRA R8170 wheel lineup. The tubeless, carbon rim features a 21 mm internal width that pairs nicely with wider, modern tires while the HYPERGLIDE cassette body is compatible with 11 and 12-speed cassettes. - 50 mm height full carbon rim - Internal rim width: 21 mm - Shared rim profile with R9200 DURA-ACE wheels - Improved aerodynamics

Designed for the highest speed environments and modern tire widths, the ULTEGRA C60 wheelset shares its all-carbon rim profile with DURA-ACE but employs a hub that is compatible with both 12 and 11-speed cassettes. For situations where aerodynamics is the priority, the new ULTEGRA R8170 C60 wheelset features an all-carbon, 21 mm internal, tubeless compatible rim and a super-fast cup and cone bearing hub that is compatible with both 12 and 11-speed cassettes. - 60 mm height full carbon rim - Internal rim width: 21 mm - Shared rim profile with R9200 DURA-ACE wheels - Improved aerodynamics

Designed for the highest speed environments and modern tire widths, the ULTEGRA C60 wheelset shares its all-carbon rim profile with DURA-ACE but employs a hub that is compatible with both 12 and 11-speed cassettes. For situations where aerodynamics is the priority, the new ULTEGRA R8170 C60 wheelset features an all-carbon, 21 mm internal, tubeless compatible rim and a super-fast cup and cone bearing hub that is compatible with both 12 and 11-speed cassettes. - 60 mm height full carbon rim - Internal rim width: 21 mm - Shared rim profile with R9200 DURA-ACE wheels - Improved aerodynamics

Conquer mountains, flatten hills, and feel your bike come alive with this ultra-light, 1365 gram wheelset. Mass is the enemy of performance, and the Alpinist CL is the lightest wheelset in its class. Weight has been pared to the absolute minimum to make the make the most of every watt and deliver incredible responsiveness without sacrificing any of the strength, ride quality, or durability that are crucial to long-term performance and satisfaction. - Assembly Method: Hand-built - Braking Surface: Disc brake only - Extras: Roval padded wheelbag. NoFault crash replacement policy. Lifetime warranty - Front Hub: Roval AeroFlange Disc, Center Lock, Sealed Cartridge bearings - Nipple Type: DT Swiss Pro Lock hexagonal - Rim Depth: 33mm - Rim Material: Carbon - Rim Type: Carbon, clincher (tube-type) - Rim Width: 21mm internal - Spoke Count: 21 - Spoke Pattern: Radial/Two-cross (2:1) - Spoke Type: DT Swiss Aerolite T-head - Weight: 562g

Conquer mountains, flatten hills, and feel your bike come alive with this ultra-light, 1365 gram wheelset. Mass is the enemy of performance, and the Alpinist CL is the lightest wheelset in its class. Weight has been pared to the absolute minimum to make the make the most of every watt and deliver incredible responsiveness without sacrificing any of the strength, ride quality, or durability that are crucial to long-term performance and satisfaction. - Assembly Method: Hand-built - Braking Surface: Disc brake only - Extras: Roval padded wheelbag. NoFault crash replacement policy. Lifetime warranty. - Nipple Type: DT Swiss Pro Lock hexagonal - Rear Hub: Roval AeroFlange Disc, Center Lock, Sealed Cartridge bearings, DT Swiss EXP internals, HG Freehub, 142x12mm thru-axle compatible - Rim Depth: 33mm - Rim Material: Carbon - Rim Type: Carbon, clincher (tube-type) - Rim Width: 21mm internal - Spoke Count: 24 - Spoke Pattern: One-cross/Two-cross (2:1) - Spoke Type: DT Swiss Aerolite T-head - Weight: 686g

When we set out to create a lightweight wheelset, we didn't want it to be "just another climbing wheel." We wanted to provide the lightest wheelset out there with the aerodynamic attributes of something twice its depth. One wheel that'll get you to the base of a climb quickly and up it as efficiently as possible, yet still be strong enough for day-to-day abuse. It was a tall order, but in the end, the CLX 32 gave us more than what we asked for. Our design process started with a low overall weight at the forefront, as we knew what weight we could hit with the information and technology we had available. With that weight in mind, we then turned our focus to aerodynamics and began an iterative process of designing and testing over 150 individual rims to find the optimal shape. These innumerable Computational Fluid Dynamics (CFD) models, Win Tunnel hours, and shots of espresso left us with a 32mm-deep shape that boasts more logged wind tunnel time than any other wheel in its category. Once we found the most aerodynamic shape, at the 32-millimter depth, we came back to the weight focus and proceeded to experiment with over 40 different layup methods to reach our desired weight. And this made the CLX 32 lighter and faster than every other competitor in the lightweight wheel category. For the CLX 32 clincher front, we mated the rim to our Aero Flange (AF) series hub with DT Swiss Aero spokes in order to create the best overall wheel system. This resulted in a 553-gram, 21mm-wide (internal width) front wheel with an extremely low inertia value. In cycling, inertia relates to the amount of force it takes to accelerate or decelerate, so wheels that are built with lightweight rims, like the CLX 32, result in a lower inertia value that creates a lively wheel that allows you to accelerate, decelerate, and change direction with less effort. But why so wide? Well, additional width does three primary things for a rim, it provides additional structural strength, it allows for a clean rim and tire interface when using wide tires (resulting in enhanced aerodynamics and faster rolling properties), and it better supports the tire in hard cornering. This boosts both predictable grip and confidence when things get twisty on the descents. Each CLX 32 clincher front wheel also employs the legendary CeramicSpeed bearings and comes with our padded wheelbag, quick-release, tubeless plugs, tubeless valve, and SwissStop Black Prince brake pads. - Assembly Method: Hand-built - Brake Track Height: 12mm - Braking Surface: Carbon fiber - Extras: Roval padded wheelbag, Roval steel quick-release, Roval tubeless plugs and tubeless valve, SwissStop Black Prince brake pads - Front Hub: Roval AF1, CeramicSpeed bearings - Nipple Type: DT Swiss Pro Lock hexagonal - Rim Depth: 32mm - Rim Material: Carbon - Rim Type: Carbon clincher, 2Bliss Ready - Rim Width: 20.7mm internal - Spoke Count: 16 - Spoke Pattern: Radial - Spoke Type: DT Swiss Aerolite T-head - Weight: 550g

When we set out to create a lightweight wheelset, we didn't want it to be "just another climbing wheel." We wanted to provide the lightest wheelset out there with the aerodynamic attributes of something twice its depth. One wheel that'll get you to the base of a climb quickly and up it as efficiently as possible, yet still be strong enough for day-to-day abuse. It was a tall order, but in the end, the CLX 32 gave us more than what we asked for. Our design process started with a low overall weight at the forefront, as we knew what weight we could hit with the information and technology we had available. With that weight in mind, we then turned our focus to aerodynamics and began an iterative process of designing and testing over 150 individual rims to find the optimal shape. These innumerable Computational Fluid Dynamics (CFD) models, Win Tunnel hours, and shots of espresso left us with a 32mm-deep shape that boasts more logged wind tunnel time than any other wheel in its category. Once we found the most aerodynamic shape, at the 32-millimter depth, we came back to the weight focus and proceeded to experiment with over 40 different layup methods to reach our desired weight. And this made the CLX 32 lighter and faster than every other competitor in the lightweight wheel category. For the CLX 32 rear clincher, we mated the rim to our Aero Flange (AF) series hub with DT Swiss Aero spokes to create the best overall system. This results in a 730-gram, 21mm-wide (internal width) rear wheel with an extremely low inertia value. In cycling, inertia relates to the amount of force it takes to accelerate or decelerate, so wheels that are built with lightweight rims, like the CLX 32, result in a lower inertia value that creates a lively wheel that allows you to accelerate, decelerate, and change direction with less effort. But why so wide? Well, additional width does three primary things for a rim, it provides additional structural strength, it allows for a clean rim and tire interface when using wide tires (resulting in enhanced aerodynamics and faster rolling properties), and it better supports the tire in hard cornering. This boosts both predictable grip and confidence when things get twisty on the descents. Each CLX 32 clincher rear wheel also employs the legendary CeramicSpeed bearings and comes with our padded wheelbag, quick-release, tubeless plugs, tubeless valve, and SwissStop Black Prince brake pads. - Assembly Method: Hand-built - Brake Track Height: 12mm - Braking Surface: Carbon fiber - Extras: Roval padded wheelbag, Roval steel quick-release, Roval tubeless plugs and tubeless valve, SwissStop Black Prince brake pads - Nipple Type: DT Swiss Pro Lock hexagonal - Rear Hub: Roval AF1, CeramicSpeed bearings, DT Swiss 240 internals, 11-speed - Rim Depth: 32mm - Rim Material: Carbon - Rim Type: Carbon clincher, 2Bliss Ready - Rim Width: 20.7mm internal - Spoke Count: 24 - Spoke Pattern: Radial/Two-cross (2:1) - Spoke Type: DT Swiss Aerolite T-head - Weight: 730g

First came our CLX 64. Then the 32s. And after racking up multiple wins in Grand Tours, Worlds, and everything in between, we knew that our best bet was to take the line to new heights, or well, new depths. We needed to design one wheel that was a true quiver killer. One wheel that had all the aerodynamic benefits of the 64 in a package that climbed like the 32, and that's where the all-new CLX 50 comes in. When we set out to create the CLX 50, we had clear goals in mind, create wheels that are 48 to 54mm deep, aerodynamically optimized, ultra-wide, and under 1400 grams. This meant that they'd have to borrow some weight savings techniques that we developed for the CLX 32, while taking some aero guidance from the CLX 64, if we were going to create what we like to call ""the unicorn wheel."" Even though the CLX 50 is similar in weight to many wheels in the ""lightweight"" category, aerodynamics came at the forefront of the development. With this, we jumped headlong into Computational Fluid Dynamics computer modeling to arrive at various rim shapes that could make the CLX 50 as fast and light as possible. It took a while, but we narrowed the rim shape down to three contenders that were then CNC machined into rims, built into wheels, and put into the Win Tunnel. In the tunnel, we tested every wheel, ours and the competition's, with a 24C tire (measuring 26C), as tires can drastically affect testing. We chose a modern-width tire to design our rims around, because they not only allow for less tire pressure (which results in more comfort and less rolling resistance) but are also just as aerodynamically efficient when paired with the correct rim width. After finding the optimized rim shape that supported our svelte weight requirements, we opted to lace the rims, via 21 DT Swiss Aerolite spokes, to our Aero Flange (AF) hub with the legendary CeramicSpeed bearings and DT 240 hub internals. And when it was time for final testing validation, we were left with a 50mm-deep, 770-gram clincher wheelset that's not only 200 grams lighter than the competition's similar depth wheel, but is also measurably faster in every conceivable test than each wheel in its category. - Assembly Method: Hand-built - Brake Track Height: 12mm - Braking Surface: Carbon Fiber - Extras: Roval padded wheelbag, Roval steel quick-release, Roval tubeless plugs and tubeless valve, SwissStop Black Prince brake pads - Nipple Type: DT Swiss Pro Lock hexagonal - Rear Hub: Roval AF1, CeramicSpeed bearings, DT Swiss 240 internals, 11-speed - Rim Depth: 50mm - Rim Material: Carbon - Rim Type: Carbon clincher, 2Bliss Ready - Rim Width: 20.7mm internal, 29.4mm external - Spoke Count: 21 - Spoke Pattern: Radial/Two-cross (2:1) - Spoke Type: DT Swiss Aerolite T-head - Weight: 770g

Developed in Specialized's Win Tunnel, and designed to interface with the world’s fastest tire, the S-Works Turbo, the Roval CLX 64 Disc is one of the fastest disc brake road race wheel/tire system ever developed. The SCS hub allows for a proper chainline on short chainstay performance road and 'cross bikes. This wheel system comes complete with the S-Works Turbo tire which measures 24mm wide for enhanced stability and traction in corners and on descents. This rear wheel uses an AFD1 SCS Center Lock aero hub that's compatible with a QR or 12mm thru-axle.

When we set out to create a wheelset built purely for speed, we wanted to make it more than just fast. Not that being fast wasn't a priority, but we were tired of wheels that only performed well in a straight line. In the end, we developed the CLX 64, the fastest wheel that we've ever tested. Not only is it the fastest in the tunnel, but its prestige has been verified with Gold Medals in the men's road race, time trial, and team time trial at the 2016 UCI World Championships. One of the first questions we get about the CLX 64 is, "Why 64mm instead of 65mm?" To put it simply, it's because 64mm simply tested faster than 65mm. One millimeter, that's how deep our testing goes. Having an in-house wind tunnel allows us to run every possible variation, and after two years of development, 80 variations in rim design, and nearly 300 hours studying tire and frame interactions in the Win Tunnel, we found 64mm to be the fastest iteration for normal riding conditions. In fact, it's even faster than the 80-plus-millimeter-deep wheels they were tested against. Being able to use a shape that's nearly 20mm shallower than the competition, yet just as low in drag, makes for a wheel that has drastically less side force and steering torque. This translates to less buffeting and more confidence in even the gustiest winds. Another positive of a shallower rim depth is the reduction in weight that follows using less material. Many deep carbon wheels feel "slow" due to their high inertia value. What's that? Inertia is the amount of force it takes to accelerate or decelerate, and wheels that are built around heavier rims lack the liveliness that many riders crave. Being over a half-a-pound lighter than the other wheels in its aero category, the CLX 64 accelerates, decelerates, and changes direction with less effort. The rim is not the only component of the CLX 64 that contributes to its aero prowess though, in order to create the fastest wheels, we focused on the wheels as a system, not just a rim with "other parts," and our Aero Flange (AF) hubs play a significant role. Designed completely in the Win Tunnel, our AF hubs feature an incredibly small frontal aero, without sacrificing stiffness, making them aerodynamically efficient. Taking the advantage a step further, these wheels were developed to work in harmony with modern-width 24C tires. The 21mm internal rim width spreads the tire out, in this case to 26C, making it seamlessly meet the rim. Not only does this create a system with low aerodynamic drag, but one that has exceptionally low rolling resistance and inspiring grip in the corners. And to make sure we checked all of the feature boxes, we also made the rim tubeless-ready. To top off the multitude of performance features of the rim, we chose the highest quality build components to pair the CLX 64 front with. Starting with DT Swiss Aerolite bladed spokes, which test faster than their round counterparts in the Win Tunnel, we hand-laced the 64 rim to our AF hubs that house CeramicSpeed's legendary bearings. Why hand-built? Machines make mistakes and mistakes aren't something we're ok with, so we have real people lace each wheel by hand. - Assembly Method: Hand-built - Brake Track Height: 12mm - Braking Surface: Carbon fiber - Extras: Roval padded wheelbag, Roval steel quick-release, Roval tubeless plugs and tubeless valve, SwissStop Black Prince brake pads - Front Hub: Roval AF1, CeramicSpeed bearings - Nipple Type: DT Swiss Pro Lock hexagonal - Rim Depth: 64mm - Rim Material: Carbon - Rim Type: Carbon clincher, 2Bliss Ready - Rim Width: 20.7mm internal, 29.9mm external - Spoke Count: 16 - Spoke Pattern: Radial - Spoke Type: DT Swiss Aerolite T-head - Weight: 695g