700c, 27-Inch & 650c

Bontrager's marquee lightweight carbon road wheel in a 51mm depth, designed for the ultimate in speed, stability, and confidence in all conditions. Be the fastest you The ultralight Aeolus RSL 51 is the perfect upgrade for a faster you. Created with Bontrager's all-new three-dimensional modeling design process, the all-new Aeolus RSL delivers a step-change in speed without sacrificing stability. It's built with the lightest RSL-level OCLV Carbon, shaped into a new 51mm rim profile for the ultimate in speed and versatility across all conditions. Tubeless Ready rims with a wider 23mm inner width are proven to roll with less drag, adding to the overall speed gains, while ultralight hubs with DT Swiss 240s internals and a Ratchet EXP 36-point freehub keep your ride smooth. All Bontrager carbon wheels are warrantied for life for the original purchaser and come with the added protection of Carbon Care. If you structurally damage your wheels while riding in the first two years of ownership, we'll replace them. It's that easy. Product details - RSL OCLV Carbon is lighter and stronger, allowing for faster, more stable rim profiles - 51mm depth rim profile born of 3D design modeling for our fastest, most stable design ever - 23mm inner width proven to roll smoother with less drag for a faster wheel and tire system - Tubeless Ready (TLR) rims compatible with both Bontrager TLR rim strips and TLR tape - 51mm depth OCLV Carbon rim (30mm outer) DT Aerolite spokes 24/24, DT ProLock nipples - Ultralight DT Swiss 240s internals with Ratchet EXP 36-point engagement 11sp freehub, 12s freehubs sold separately - Centerlock disc hubs with 12mm thru-axle front and rear, axle swap available for QR and 15mm - Includes TLR rim strip, TLR valve, and traditional rim strip

Zipp's 303 S Tubeless Disc Brake wheelset provides today's cyclists the versatility they demand with the speed they crave. Expanding greatly on its heritage of conquering the Spring Classics, this 303 wheelset maintains its ideal-for-every-terrain 45mm rim depth but adds a significantly wider internal width to provide greater performance and ride quality in almost every measurable way. This wheelset is tubeless for disc-brake bikes, allowing the ability to run wide tires at lower pressures for race-ready speed on or off the pavement. The 303 S is among our lightest wheelsets, optimized for top aero performance with a 28mm tire but capable of handling gravel tires up to 50mm wide. - Wide rims optimize tire profile to allow lower tire pressure, especially with tubeless. The result is a larger contact patch for increased grip and confident cornering, descending, and handling in wet conditions. - Lower tire pressures and larger volume provides a compliant ride with fewer vibrations. - Significant watt savings when running larger tires at lower pressure. - Wide, hookless rims create a seamless transition to the tire, reducing drag. - Fastest with 28mm, but fits wide gravel tires as well - New Zipp graphics and cosmetic identity that scream speed

A carbon road wheel with a 37mm depth that pairs our latest rim profile with Pro-level pricing to deliver an easy upgrade in speed, weight, and stability. Fast and lightweight The versatile Aeolus Pro 37 is the perfect wheel for climbs, crits, cross, and more. The strong, lightweight Pro-level OCLV Carbon allows for faster, more stable rim profiles—and the silky smooth hubs rolling on DT Swiss 350 internals deliver a quick-rolling ride wherever you roam. All Bontrager carbon wheels are warrantied for life for the original purchaser and come with the added protection of carbon care. If you damage your wheels while riding in the first two years of ownership, we'll replace them. It’s that easy. Product details - OCLV Pro carbon offers an optimized blend of weight, strength, and durability - All-new 37mm depth brings the benefits of aerodynamics to lightweight design - Tubeless Ready (TLR) rims allow for quick transition to tubeless system - 37mm depth OCLV Carbon rim (28mm outer, 21mm inner width), DT Aerolite spokes 24/24, DT Pro Lock nipples - Center lock disc hubs with 12mm thru-axle front and rear, DT Swiss 350 hubs with 18 point engagement - Compatible with Shimano 10/11 speed, SRAM 10/11 freehubs, 12sp available separately - Includes TLR rim strip, TLR valve, and traditional rim strip - Warrantied for life, no rider weight limit

Cross is always coming Ready for your call-up? Punchy accelerations and twisty off-camber corners are no problem for this cyclocross-specific tubular wheel. The lightweight alloy rim has a wide profile specifically designed to support cross tires and features 108 points of engagement so that every ounce of energy you put down moves you forward, fast. Key features - Light and durable alloy tubular rim designed for cyclocross use - Rapid Drive 108 j-bend hub instantly transfers effort into forward momentum - 142/100 spacing with 12mm thru-axle front and rear, convertible to 15mm/5mm QR fr or 5mm QR rear - Center Lock disc hubs with interchangeable axles increase compatibility - 24 hole fr/r with DT Swiss bladed spokes, Alpina locking nipples - Designed and tested with elite riders from Telenet Fidea Lions - Compatible with Shimano 10/11 speed, SRAM 10/11 freehubs, XD driver available

For the groad less traveled Aeolus Pro 3V is the ultimate road disc upgrade. It has a wider 25mm internal rim so you can run lower pressure for better tire support, added traction, better cornering, and a faster, more comfortable ride. Plus, Rapid Drive 108 road hubs add snappy engagement for an all-around better ride. Product details - OCLV Pro Carbon offers an optimized blend of weight, strength, and durability - D3 Dual Directional Design profile cuts drag at tire-leading and rim-leading edge - 25mm inner rim width (32mm outer) for added tire support to suit larger-volume road and gravel tires - Rapid Drive 108 road hubs provide quick engagement for faster acceleration and increased control - Tubeless Ready (TLR) rims allow for quick transition to tubeless system - Center Lock disc with 12mm thru-axle and end caps available for 15mm conversion - Carbon Care Wheel Loyalty Program offers no-cost replacement or repair of rim for first two years of ownership - No rider weight limit

A dependable, tubeless ready (TLR) wheel that delivers stiffness and stability for high-end performance. Disc brake ready The Tubeless Ready Paradigm TLR Disc wheel offers consistent, confident performance and tire support. Stacked lacing provides a better bracing angle for a stiffer wheel and an agile and more responsive ride feel. Disc brakes offer improved braking performance for added confidence. Product details - Tubeless ready (TLR) rims allow for quick transition to tubeless system upgrade - Offset spoke bed reduces wheel dish for stiff and stable performance - 6061 alloy rim 23mm outer, 19.5mm inner width, 3-pawl hub - Compatible with Shimano 10/11spd, SRAM 10/11, Centerlock freehubs - Includes Bontrager TLR rim strip and TLR valve stem - No rider weight restrictions

- 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 18.4mm - Rim inner width range 0-21.9mm - Rim Color Black - Rim Drilling 36 - Hub Model Shimano HB-M475 - Wheel Weight - - Spoke Type Stainless - Valve Schrader - Rim External Width 24.4mm - Depth 16mm - Rim Model Alex DM18 - Skewers Included Yes

A high-value, high-performance, full-carbon disc brake road wheel packed with all of the aero and performance benefits of a 35mm carbon rim. Wheels for free speed Unlock the speed and performance of a carbon wheel upgrade with Aeolus Elite 35 TLR. This full carbon, tubeless-ready, disc brake road wheel balances durability, weight, and aerodynamics for outstanding performance that doesn't break the bank. A proven shape with a 35mm depth and the added versatility of disc brake hubs make this the perfect high-performance, high-value carbon road wheel. All Bontrager carbon wheels are warrantied for life for the original purchaser and come with the added protection of carbon care. If you damage your wheels while riding in the first two years of ownership, we'll replace them. It’s that easy. Product details - OCLV carbon offers an optimized blend of weight, strength, and durability - D3 Dual Directional Design profile cuts drag at tire-leading and rim-leading edge - Tubeless Ready (TLR) rims allow for quick transition to tubeless system - 35mm depth OCLV Carbon rim (27mm outer, 19.5mm inner width) Grand Strada spokes 24/24, hex alloy nipples - Center lock disc hubs with 12mm thru-axle front and rear, Bontrager 24 point engagement, 3-pawl hub - Compatible with Shimano 10/11 speed, SRAM 10/11 freehubs, 12sp available separately - Includes TLR rim strip, TLR valve, and traditional rim strip - Warrantied for life, no rider weight limit

A high-value, high-performance, full-carbon disc brake road wheel packed with all of the aero and performance benefits of a 35mm carbon rim. Wheels for free speed Unlock the speed and performance of a carbon wheel upgrade with Aeolus Elite 35 TLR. This full carbon, tubeless-ready, disc brake road wheel balances durability, weight, and aerodynamics for outstanding performance that doesn't break the bank. A proven shape with a 35mm depth and the added versatility of disc brake hubs make this the perfect high-performance, high-value carbon road wheel. All Bontrager carbon wheels are warrantied for life for the original purchaser and come with the added protection of carbon care. If you damage your wheels while riding in the first two years of ownership, we'll replace them. It’s that easy. Product details - OCLV carbon offers an optimized blend of weight, strength, and durability - D3 Dual Directional Design profile cuts drag at tire-leading and rim-leading edge - Tubeless Ready (TLR) rims allow for quick transition to tubeless system - 35mm depth OCLV Carbon rim (27mm outer, 19.5mm inner width) Grand Strada spokes 24/24, hex alloy nipples - Center lock disc hubs with 12mm thru-axle front and rear, Bontrager 24 point engagement, 3-pawl hub - Compatible with Shimano 10/11 speed, SRAM 10/11 freehubs, 12sp available separately - Includes TLR rim strip, TLR valve, and traditional rim strip - Warrantied for life, no rider weight limit

A strong, light, and durable carbon Boost road wheel with a 25mm inner width and Rapid Drive 108 hub that's perfect for higher-volume road and gravel tires. Aeolus Pro 3V is the ultimate road disc upgrade. It has a wider 25mm internal rim so you can run lower pressure for better tire support, added traction, better cornering, and a faster, more comfortable ride. Plus, a Rapid Drive 108 road hub with Boost 148 spacing adds snappy engagement for an all-around better, more confident ride. Product details - OCLV Pro Carbon offers an optimized blend of weight, strength, and durability - D3 Dual Directional Design profile cuts drag at tire-leading and rim-leading edge - 25mm inner rim width (32mm outer) for added tire support to suit larger-volume road and gravel tires - Rapid Drive 108 road hubs provide quick engagement for faster acceleration and increased control - Tubeless Ready (TLR) rims allow for quick transition to tubeless system - Boost 148 wider hub flanges enhance bracing angle for stiffer wheel - No rider weight limit

Affordable Aero Combine state-of-the-art aerodynamics with the benefits of tubeless ready, and you've got the Aeolus Comp 5 TLR road wheel. A classic aluminum rim with a seamlessly attached 50mm carbon fairing combine for a proven aero profile that has been wind tunnel tested to be incredibly fast. Aeolus Comp 5 TLR is a proven high-value option for the aero-conscious rider. Key features - Rim construction combines lightweight aluminum rim with a bonded carbon fiber fairing - Tubeless Ready (TLR) rims allow for quick transition to tubeless system - Aluminum with carbon rim construction (23mm outer, 17.5mm inner width) - Compatible with Shimano 10/11 speed, SRAM 10/11, - Includes Bontrager TLR rim strip, TLR valve stem, internal cam quick release, and traditional rim strip - DT bladed spokes 18fr, 24r, Alpina locking nipples - No rider weight restrictions

Whether you're touring, building the ultimate commuter or just want excellent stopping power on the road, Bontrager's Select Disc Road Rear Wheel is a sweet choice. Free speed will be yours thanks to the low-profile aero rim and 24 spokes that aren't afraid of rough roads. Plus, the hub is easily serviced and features polished, ground bearing races, a forged shell and a chromoly axle for top-notch durability. And the 130mm and 135mm Over Locknut Dimension (OLD) hub options makes these wheels usable on both your road or cyclocross frames.

Zipp's 303 Firecrest Tubeless wheels are designed for the real world—a world of imperfect conditions, varying road surfaces, and elements where the bottom line is simple: efficiency = speed. They're faster, lighter, and more capable over varied terrain—whether the surface is pavement in all its conditions or no pavement at all. Deeply rooted in Zipp's drive to conquer the Spring Classics, the new 303 Firecrest is remade with a purpose-made approach for the demands of modern road bikes. When it comes to going fast on a bicycle, efficiency means reduced wind resistance, rolling resistance, rider fatigue, and weight. The 303 Firecrest Tubeless Disc-brake was designed using real-world direct measurements (vs. primarily wind tunnel or computer simulation). The results were huge. Its rim is slightly more bulbous in design than its predecessor, with a 32mm outside width, a 25mm internal width, and a 40mm rim depth. The profile provides low drag and an improved transition between rim and tire, boosting aero efficiency on the road. The wide rim stance also features less tire deflection for reduced rolling resistance. The combination of the wider tire, increased tire volume, and lower tire pressure helps to reduce rider fatigue by smoothing out the ride over imperfect pavement and road conditions—the tire and wheel system absorbs the shaking, not the rider. The 303 Firecrest Tubeless wheels are for dedicated cyclists who aspire to the latest in technology. They're for those who compete in races, against peers, or simply to conquer personal limits. - New Zipp graphics and cosmetic identity that scream speed - Versatile endurance wheelset for the modern road bike with tubeless and hookless rim profile - Lighter weight than its predecessor, making it nimble and fast - Tubeless Made Easy, optimized tire bed sign allows for simple tool-free installation and removal with no need for an air compressor to seat the tire. - Ultra-wide 25mm rim profile creates a better tire interface to be fast on or off the road - 40mm rim depth makes a light and aero wheel in every situation - Ships with 12mm end caps - Center Lock rotor interface (lockring included)

- 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

A durable road wheel with a 25mm inner width perfect for higher-volume road and gravel tires. A wider rim for a better ride The Paradigm Comp 25 road wheel adds traction, speed, confidence, and comfort to your ride, with a wider internal rim width that lets you run lower pressure for better tire support. Product details - 25mm inner rim width (30mm outer) offers added tire support to better suit larger-volume road and gravel tires - Rapid Drive 54 road hubs provide quick engagement for faster acceleration and increased control - Offset spoke bed reduces wheel dish for stiff and stable performance - Tubeless Ready (TLR) rims allow for quick transition to tubeless system - 23mm rim depth with 24 hole front/rear and DT Aerolite spokes - Centerlock disc with 12mm thru-axle and end caps available for 15mm conversion - Includes TLR rim strip and TLR valve for simple tubeless setup - No rider weight limit

Campagnolo has developed a totally reworked disc brake version of the Bora One that transfers skills and knowledge gained in years of experience and introduces a new logic and innovative technologies to ensure unprecedented results. The Bora One Disc Brake is the most sophisticated carbon wheel on the market and one of the few specifically designed for disc brake systems. It is extremely light yet stiff, resistant to shock and perfectly balanced: a versatile wheel for any kind of route. - Use of resins and materials that guarantee superior finish and good UV resistance - Designed specifically for disc brake systems - Lightweight uphill thanks to its 35mm rim - Smooth and safe downhill thanks to its USB bearings - The layers of carbon are hand positioned to ensure the perfect equilibrium of weight and performance - Monolithic aluminum hubs optimize disc braking torque - Weight: 1483 grams

A thread-on freewheel-compatible durable & classic 32H 700c QR road wheel with a new-school 18mm internal width rim and premium Stainless Steel spokes. - Lightweight (485g) pinned construction low profile double wall rims w/CNC machined sidewalls, wear indicator and anodized matte black finish - Joytech alloy QR hubs w/serviceable cup and cone bearings - Conventional screw-on freewheel fitting (8/9/10sp compatible) — axle can be re-spaced for 5/6/7sp compatibility - Plain gauge 2.0mm SUS304 Stainless Steel spokes (black) w/12mm brass nipples (silver) - 32H/3X lacing - Presta drilling - QR levers & high-pressure rim tape included - Not tubeless compatible - Weight: 1076g

A durable & classic 32H 700c QR road wheel with a new-school 18mm internal width rim and premium Stainless Steel spokes. - Lightweight (485g) pinned construction low profile double wall rims w/CNC machined sidewalls, wear indicator, and anodized matte black finish - Joytech alloy QR hubs w/serviceable cup and cone bearings - Plain gauge 2.0mm SUS304 Stainless Steel spokes (black) w/12mm brass nipples (silver) - 32H/3X lacing - Presta drilling - QR levers & high-pressure rim tape included - Not tubeless compatible - Weight: 974g

An affordable and clever dual-duty rim & disc brake compatible 29"/700c wheelset that combines MTB hub spacing with screw-on freewheel compatibility for a wheelset that's perfectly suited to trekking, MTB, and urban use. - Alex Rims Z1000 pinned construction single wall rim with 20mm internal width suitable for a wide-range of tire widths & ground sidewall - Joytech 6-Bolt disc alloy nutted hubs w/ serviceable cup and cone bearings - Anodized brake track for clean looks when used with a disc brake - Conventional screw-on freewheel fitting (7/8/9/10sp compatible) - Plain gauge 14G/2.0mm SUS304 Stainless Steel spokes (black) w/ 12mm brass nipples (silver) - 36H/3X lacing - Schrader drilling - Axle nuts & high-pressure rim tape included - Weight: Front - 1169g, Rear - 1244g

- Alex C303 single wall alloy 27'' rim - Silver - Pin joint construction - No eyelets - 36 holes - Schrader valve - Zinc plated steel spokes - Silver

When heavy duty cyclocross riding is your passion, the C 1800 is the right partner for any mission. With its high-end sleeved rim ready to take up MTB-sized rubber and the tough build featuring DT's sturdiest bladed spokes, it is right at home in anything from jumping obstacles to cutting through the mud to sprinting up steeps. Trademark DT Swiss reliability coming from the precision hubs and the superb wheel building quality guarantee trouble free rides year-in and year-out.

A durable & classic 32H 700c road wheel with a new-school 18mm internal width rim. - 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 - 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: 989g

- Position Front - Wheel Diameter/ISO 700C / 622 - Axle Type QR - Hub Spacing 100mm - Wheel-Brake Comp. Rim - 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 32 - Hub Model Shimano Deore HB-T610 - Wheel Weight - - Spoke Type DT Stainless - Valve Presta - Rim External Width 24mm - Depth 17.5mm - Rim Model Mavic A119 - Skewers Included Yes

- Campagnolo's first dedicated gravel wheel - UD carbon fiber with laquerless finish, ASTM 2 & DIN EN 17406 Category 2 certified - Proprietary 2-way fit technology, no need for tubeless tape - Asymmetrical rim profile with mini-hook to sustain higher pressures on smaller tires, 25mm internal width can handle 38mm up to 76mm tires - 1485g wheelset weight, 120kg weight limit

- Modern, high quality 700c entry level Gravel / CX / Road Disc wheel - 100mm front / 135mm rear quick release axles - 100% tubeless ready out of the box: tubeless tape and brass tubeless valve pre-installed! - Alex GD24P rims are, strong, light and feature a 21mm internal width that is perfectly suited to tires sizes from 25mm to 50mm - Shimano M475 hubs feature adjustable cup-and-cone bearings and MTB-grade sealing for trouble free performance in all conditions - 32 black stainless steel spokes and black brass nipples for long term reliability & good looks - Shimano HG freehub body is compatible with all 8-10 speed and some 11 speed cassettes.

Bontrager's marquee lightweight carbon road wheel in a 62mm depth, designed for the ultimate in speed and stability when speed matters most. Be the fastest you Aeolus RSL 62 is the perfect upgrade for the fastest you. Created with Bontrager's all-new three-dimensional modeling design process, the all-new Aeolus RSL delivers a step-change in speed without sacrificing stability. It's built with the lightest RSL-level OCLV Carbon, shaped into a new 62mm rim profile for unmatched speed and the stable confidence to unleash it. Tubeless Ready rims with a wider 23mm inner width are proven to roll with less drag, adding to the overall speed gains, while ultralight hubs with DT Swiss 240s internals and a Ratchet EXP 36-point freehub keep your ride smooth. All Bontrager carbon wheels are warrantied for life for the original purchaser and come with the added protection of Carbon Care. If you structurally damage your wheels while riding in the first two years of ownership, we'll replace them. It's that easy. Product details - RSL OCLV Carbon is lighter and stronger, allowing for faster, more stable rim profiles - 62mm depth rim profile born of 3D design modeling for our fastest, most stable design ever - 23mm inner width proven to roll smoother with less drag for a faster wheel and tire system - Tubeless Ready (TLR) rims compatible with both Bontrager TLR rim strips and TLR tape - 62mm depth OCLV Carbon rim (30mm outer), DT Aerolite spokes 24/24, DT ProLock nipples - Ultralight DT Swiss 240s internals with Ratchet EXP 36-point engagement 11sp freehub, 12s freehubs sold separately - Centerlock disc hubs with 12mm thru-axle front and rear, axle swap available for QR and 15mm - Includes TLR rim strip, TLR valve, and traditional rim strip

The features of the Zonda wheel have been enhanced even further with a C17 rim that is compatible with more comfortable clincher tires. It's also 10g lighter than the previous version. Zonda is one of Campagnolo's best-selling aluminum wheels. It's packed with technological innovations that make it a highly sophisticated solution compared to what other brands offer for the same price. A smaller hub diameter combined with the differentiated rim height (24/27mm) and the new self-locking nipples offer a front wheel that's smooth to steer and bump-resistant: racing on this model is a safe bet. - One of the best-selling wheels of all time, the Zonda is an aluminum wheel boasting technologies that are far more sophisticated than any other product of its kind, within this price range, on the market. - Weight and stiffness are optimized thanks to the milled rim with differentiated height - Aerodynamic spokes and self-locking nipples guarantee performance and reliability - The lightweight structure and hi-tech features of these wheels make them ideal for racing or grand fondo cycling. - The robustness and reliability that set the Zonda apart make it one of the best wheels for road cycling.

- 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 15mm - 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 20.2mm - Depth 16mm - Rim Model Mavic Open Elite - Skewers Included Yes

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