700c, 27-Inch & 650c

Full-carbon, 50mm deep tubeless-ready disc brake wheel that perfectly balances durability, weight, and aerodynamics. Proven, tested design for the perfect upgrade There has never been a better time to upgrade to the feel and performance of carbon wheels. Aeolus Pro 5 TLR is a full carbon, tubeless-ready disc brake road wheel that balances durability, weight, and aerodynamics for pro-level performance that doesn’t break the bank. We started with a proven 50mm-depth shape and added the versatility of disc brake hubs to make a carbon road wheel available to all. Product details - D3 Dual Directional Design profile cuts drag at tire-leading and rim-leading edge - OCLV Pro carbon offers an optimized blend of weight, stiffness, and durability - Tubeless Ready (TLR) rims allow for quick transition to tubeless system - Stacked lacing alignment provides a better spoke bracing angle for a stiffer wheel - 50mm depth OCLV Carbon rim (27mm outer, 19.5mm inner width) DT Aerolite spokes and Alpina locking 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, axle swap kit available for quick release and 15mm - Includes TLR rim strip, TLR valve, valve core removal tool, and traditional rim strip

An ultralight 37mm depth carbon road wheel that delivers speed and stability on climbs, crits, classics, and more. The ultimate road wheel Faster. Lighter. More stable. The ultralight Aeolus RSL 37 is the ultimate carbon road wheel for climbs, crits, and classics. RSL-level OCLV Carbon is lighter and stronger, allowing for a faster, more stable 37mm rim profile that is lighter than shallower wheels and faster than deeper wheels. Ultralight hubs with DT Swiss 240s internals and a Ratchet EXP 36-freehub keep everything rolling smooth. 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 RSL Carbon is lighter and stronger, and allows for faster, more stable rim profiles - RSL optimized 37mm depth provides leading speed, stability, and weight - Tubeless Ready (TLR) rims allow for quick transition to tubeless system - 37mm depth OCLV Carbon rim (28mm outer) DT Aerolite spokes 24/24, DT ProLock nipples - Smooth rolling, ultralight DT Swiss 240s internals - Center lock disc hubs with 12mm thru-axle front and rear, axle swap available for front QR and rear 15mm - Includes TLR rim strip, TLR valve, and traditional rim strip

- 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 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

Get back on the bike with a genuine replacement wheel. When it's time to refresh your trusty bike, Trek genuine replacement wheels have you covered. PRODUCT DETAILS - Original equipment replacement Bontrager Paradigm SL TLR 24H Hole wheel - Lightweight alloy rim (26mm outer, 21mm inner width) - 6-bolt brake disc hubs - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed

Zipp's 353 NSW Tubeless Disc-brake wheel is the pinnacle of our pursuit of versatility and speed. This wheel fuses Zipp's two most advanced approaches, Sawtooth rim profile and TSE, for an all-encompassing approach to performance. With its undulating 45mm-deep rim shape, the 353 NSW provides speed on every terrain with best-in-class aerodynamic efficiency and crosswind stability. The 353 NSW is Zipp's lightest tubeless wheel yet, making it a fast-puncher ready to fight its way into the breakaway. Zipp's use of hookless (straight side) rims in the 353 NSW is integral to achieving our mission of Making You Faster. With hookless, the transition between the tire and the rim is more seamless and aero. Zipp's hookless rims have more efficient resin distribution, which means lighter wheels. They also are highly durable. Zipp's 353 NSW's Sawtooth rim shape with Hyperfoils optimizes aerodynamic efficiency and crosswind stability. The Sawtooth design also allows the rim to be structurally strong but light. That will help you snap out of corners and maintain that speed no matter the terrain, especially in the steep, punchy stuff. The 353 NSW utilizes Zipp's Total System Efficiency, or TSE, approach to wheel design: overcoming specific barriers to speed: wind resistance, gravity, rolling resistance, and vibration losses. The wheel's 25mm internal width is ideal for running wider tubeless tires at reduced air pressure for a more efficient ride. At the center of the 353 NSW is the Cognition V2 Hubset, re-engineered with an updated Axial Clutch V2 mechanism for quicker engagement and lower friction, as well as improved durability. - Versatile endurance wheel for the modern road bike with tubeless and hookless rim profile - Our lightest tubeless wheel yet, making it a fast-puncher ready to fight - Optimized tire bed for easy tire installation - TSE for greater efficiency and reduced rolling resistance - Sawtooth rim with Hyperfoil nodes and HexFin ABLC dimple pattern for top aero and crosswind-stable performance with an undulating rim depth - Cognition V2 hubset rolls efficiently whether you are pedaling or coasting. Its Axial ClutchV2 technology reduces drag and lowers friction - Ships with 12mm end caps - Center Lock rotor interface. Lockring is included - Zipp graphics applied using Zipp's ImPress direct-print technology - Lifetime warranty

A fast, light, and durable carbon road wheel with a 25mm inner width, 37mm depth, and DT Swiss 240 hub that's perfect for higher-volume road and gravel tires. Lighter, faster, wider When you want to take the road less traveled and travel fast. The Aeolus RSL 37 V Road Wheel brings our latest, lightest, fastest rim shape with a wider 25mm inner width. Perfect for today's high volume road and gravel tires. 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 RSL Carbon is lighter and stronger and allows for faster, more stable rim profiles - RSL optimized 37mm depth and 25mm inner width brings leading performance to wider road and gravel wheel and tires - Tubeless Ready (TLR) rims allow for quick transition to tubeless system - 37mm depth OCLV Carbon rim (25mm inner 31mm outer width), DT Aerolite spokes 24/24, DT Relock nipples - Smooth-rolling, ultralight DT Swiss 240 internals - Center lock disc hubs with 12mm, axle swap available for front QR and rear 15mm - Includes TLR rim strip, TLR valve, and traditional rim strip, tape compatible

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. At the center of the 303 Firecrest Tubeless is a versatile and durable new hubset, the German-engineered ZR1 DB. This hubset features 66 points of engagement for quicker response. 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)

Zipp's 353 NSW Tubeless Disc-brake wheel is the pinnacle of our pursuit of versatility and speed. This wheel fuses Zipp's two most advanced approaches, Sawtooth rim profile and TSE, for an all-encompassing approach to performance. With its undulating 45mm-deep rim shape, the 353 NSW provides speed on every terrain with best-in-class aerodynamic efficiency and crosswind stability. The 353 NSW is Zipp's lightest tubeless wheelset yet, making it a fast-puncher ready to fight its way into the breakaway. Zipp's use of a hookless (straight side) rim in the 353 NSW is integral to achieving our mission of Making You Faster. With hookless, the transition between the tire and the rim is more seamless and aero. Zipp's hookless rims have more efficient resin distribution, which means lighter wheels. They also are highly durable. Zipp's 353 NSW's Sawtooth rim shape with Hyperfoils optimizes aerodynamic efficiency and crosswind stability. The Sawtooth design also allows the rim to be structurally strong but light. That will help you snap out of corners and maintain that speed no matter the terrain, especially in the steep, punchy stuff. The 353 NSW utilizes Zipp's Total System Efficiency, or TSE, approach to wheel design: overcoming specific barriers to speed: wind resistance, gravity, rolling resistance, and vibration losses. The wheel's 25mm internal width is ideal for running wider tubeless tires at reduced air pressure for a more efficient ride. At the center of the 353 NSW is the Cognition V2 Hubset, re-engineered with an updated Axial Clutch V2 mechanism for quicker engagement and lower friction, as well as improved durability. - Versatile endurance wheel for the modern road bike with tubeless and hookless rim profile - Our lightest tubeless wheel yet, making it a fast-puncher ready to fight - Optimized tire bed for easy tire installation - TSE for greater efficiency and reduced rolling resistance - Sawtooth rim with Hyperfoil nodes and HexFin ABLC dimple pattern for top aero and crosswind-stable performance with an undulating rim depth - Cognition V2 hubset rolls efficiently whether you are pedaling or coasting. Its Axial ClutchV2 technology reduces drag and lowers friction - Ships with 12mm end caps - Center Lock rotor interface. Lockring is included - Zipp graphics applied using Zipp's ImPress direct-print technology - Lifetime warranty

- 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

The PR 1600 SPLINE 32 is characterized by its super stiff yet lightweight medium-profile aluminum rim. The use of the PHR nipple system allows a very low weight. Stiffness is generated via the big cross-section and thanks to the 18mm internal width and the tubeless-ready design, it is ideally equipped for the use of modern road bike tires. The PR 1600 SPLINE 32 is a wheel that excels on any terrain, transfers every bit of energy into forward momentum, and takes every corner with Swiss precision.

The most advanced DT Swiss aero disc brake wheelset offers new top speeds while handling the bike safely, anytime. The latest generation of ARC 1100 DICUT wheels was developed in cooperation with SWISS SIDE, leading expert in aerodynamic optimization. Consequently, the new AERO+ rim profile minimizes both aero drag and steering moment to improve its aerodynamics and control, even strong cross winds. Thus, it makes it easier for the rider to keep the aero wheel under control while taking advantage of the forward-pushing sailing effect. The wheel setup is completed by the new DT Swiss aero spokes in combination with the sleek 180 DICUT hub, including ultra-low-drag SINC ceramic bearings.

The HE 1800 SPLINE 32 is the perfect wheelset to enter into the world of e-road biking. A super-reliable pair of wheels for your everyday e-road bike rides, the HE 1800 SPLINE 32 comes with e-road-specific components to handle that little bit of extra power and secure unlimited riding fun on the road. Whether you simply want to enjoy the extra support uphill or if you want those additional watts to hang with your elite racing friends, the HE 1800 SPLINE 32 is ready for every e-road challenge. Shimano/SRAM 11-speed road cassette-compatible

Riders known for being hard on their wheels, for not avoiding potholes, and for out sprinting people in full pro kit while on their way to do the groceries should take a close look at the ER 1600 SPLINE 32. A high-end welded alloy rim with a huge cross section laced to wide aero spokes leave you with nothing left to desire. And don't be fooled by the classy looks and a silky smooth Ratchet System hub, because the ER 1600 SPLINE 32 really is all about hard riding and reacting to power coming from the strongest of calves.

Our benchmark-setting Aero+ rim matched to a punchy mix of top end aerolite and laced to premium Ratchet System hubs makes for a wheel that delivers in all riding situations. Fitting 28mm tires on its wide rims will give you all the comfort and grip needed for extended rides on mixed surfaces. At the same time, in combination with 25mm rubber, the ERC 1400 SPLINE will aero optimize your race bike, ready for you to set your own, new benchmarks.

- Affordable and reliable road rim brake wheel - Silver rim, spoke and hubs for a classic look - Semi-aero Alex DA22 rim is light (450g) and stiff - Shimano Tiagra-grade RS400 hubs feature smooth, adjustable cup-and-cone bearings with polished races for superior, long lasting performance - 32 stainless steel spokes and brass nipples for long term reliability - 8-11 speed compatible Shimano HG11 freehub body.

Upgrade or refresh your bike. - Original Equipment replacement Bontrager AT-550 700c wheels - Bontrager AT-550 single wall, non-eyeletted rims - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed

Smooth rolling and confident braking. The Tubeless Ready Paradigm Comp Disc wheel offers consistent, confident braking and all-condition performance. Stacked lacing provides a better bracing angle for a stiffer wheel and an agile and more responsive ride feel while interchangeable axles allow for maximum compatibility. Key features - Stacked lacing alignment provides a better spoke bracing angle for a stiffer wheel - Tubeless Ready (TLR) rims allow for quick transition to tubeless system upgrade - Offset spoke bed reduces wheel dish for stiff and stable performance - Interchangeable axles allow for compatibility with more frames and forks - Lightweight alloy rim (23mm outer, 19.5mm inner width) - Includes Bontrager TLR rim strip and TLR valve stem - No rider weight restrictions

The entry into the world of gravel riding, the G 1800. If you want to give cycling a try and plan to do your first rides off-road the G 1800 is your choice of wheel. Combining all the key advantages of DT's gravel segment wheels at a very attractive price point, these wheels may be your entry into the world of gravel riding. Leave for beaten roads and turn to the unexplored paths, the G 1800 will join you. - 370 based hub

High end, bladed straightpull spokes and the most reliable and light weight freewheel system make for an efficient ride. Offering the perfect blend of comfort, grip and lightweight in combination with a higher volume tire, the wide and stiff full carbon rims accelerate with the best of them. So the PRC 1400 SPLINE 35 is ready for anything, are you? - Spline 240S based hub

High end, bladed straightpull spokes and the most reliable and light weight freewheel system make for an efficient ride. Offering the perfect blend of comfort, grip and lightweight in combination with a higher volume tire, the wide and stiff full carbon rims accelerate with the best of them. So the PRC 1400 SPLINE 35 is ready for anything, are you? - Spline 240S based hub with 36t ratchet system - Straight-pull hub/spokes built with 2-cross pattern

Upgrade or refresh your bike. - Original Equipment replacement Bontrager TLR Disc wheels - Bontrager Approved double wall, non-eyeletted rims - Convert to tubeless with TLR rim strip and valve, sold separately - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed

Best seller. You'll be hard-pressed to find a better wheel anywhere near these prices.

The Reynolds ARx series delivers an unmatched selection of carbon fiber wheels to offer you the perfect product capable of tracking the types of terrain and roads you ride. The ARx line of wheels carries on the heritage of our wildly popular Attack, Assault and Strike wheels with wider rim profiles optimized for modern, wider tubeless tires. Working with the wider profiles allowed our engineers to design sleek, new rim shapes that vastly improve stability in crosswinds in the deeper sectioned rims. The new ARx profiles are not only wider and faster, but they are also lighter than their Attack, Assault and Strike predecessors. Bladed Sapim CX-Sprint spokes which are both lighter and more aerodynamic Painted rims with water transferred graphics for a clean and subtle appearance Lighter hubs with a sleeker overall appearance •Wide, tubeless ready rim provides better fit for higher volume tires that increase grip, lower rolling resistance and provide greater comfort •Refined, wider rim shapes have been optimized for crosswind stability at a variety of yaw angles •Features Sapim CX-Sprint bladed spokes with lightweight alloy nipples •Premium graphics offer ultra clean and subtle appearance •Equipped with fast rolling and smooth reynolds allroads hubs •Disc and rim brake specific models available •Ctg2 brake track is 30% more resistant to heat than previous models •Lifetime warranty WHAT'S IN THE BOX? •2x45mm Tubeless Valve Stems •End Caps (12TA/12x142 installed, 15TA included) •25mm Tubeless Tape installed •Reynolds Owner's Manual

- Zipp’s ultimate road racing wheelset. Aerodynamically efficient and stable in all wind conditions. - Optimized for 28mm tubeless tires at lower pressure for reduced rolling resistance and vibration damping. - Total System Efficiency (TSE) approach addresses wind resistance, gravity, rolling resistance, and vibration losses. - More than 400 grams lighter than its predecessor - Hookless rims for a more seamless and aerodynamic transition between tire and the rim - Cognition V2 Hubset with an updated Axial Clutch V2 mechanism for quicker engagement, lower friction, and improved durability. - Center locking rotor interface. Lockring is included with the wheels - 1360g - Lifetime warranty

- Position Rear - Wheel Diameter/ISO 700C / 622 - Axle Type QR - Hub Spacing 135mm - Wheel-Brake Comp. Rim - Freehub Body Shimano HG - 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 Acera FH-T3000 - Wheel Weight - - Spoke Type Stainless - Valve Schrader - Rim External Width 24.4mm - Depth 16mm - Rim Model Alex DM18 - Skewers Included Yes

CZR i23 gravel wheels are designed to minimize weight while blending stiffness and compliance to maximize power transfer and increase comfort. CZR i23 rims feature a 24mm section depth to maximize energy transfer, reduce weight, improve vertical compliance, and reduce rider fatigue while a hooked bead also improves tire retention with high pressure adventure road and gravel tires. CZR I23 CARBON RIMS Reinforced spoke beds improve overall wheel strength and durability while also minimizing weight in areas where less strength, and therefore material, is needed. CZR i23 rims feature 3mm of asymmetrical spoke offset and a 24mm section depth to improve radial stiffness and maximize energy transfer without being affected by crosswinds like other wheels with deeper profiles. SOLID STRIP & TCS TAPE Durable nylon strip that lies between the rim and tubeless tape to prevent tubeless tape from pushing into the spoke holes and ensures a smooth interface between the tire and rim. The smooth surface makes it easier to mount a tire by preventing air from escaping around the bead at each indent during inflation. Solid Strip also protects the airtight system from puncture in the case of a broken spoke. 2-CROSS OR 3-CROSS LACING CZR i23 gravel wheels with 24 spokes feature a 2-cross lacing pattern to increase radial stiffness and decrease weight. CZR i23 wheels with 28 spokes feature a 3-cross pattern to increase durability while still providing ample radial stiffness due to the additional spokes. FREQUENCY HUBS The world's best carbon rims deserved to be paired with high-quality hubs that further improve the performance of a lightweight, dependable carbon wheelset. Frequency hubs feature a low-drag, 6-pawl design that alternates contact between two sets of 3-pawl groupings to provide a responsive 5 degrees of freehub engagement. Frequency hubs laced to CZR i23 wheels feature lightweight pawl springs that minimize drag and therefore improve efficiency for drop-bar usage. AERODYNAMIC WING SPOKES Pillar racing spokes that are cold-forged into an aerodynamic wing shape that reduces drag at the trailing end of each spoke. As a result, wing spokes improve overall efficiency while still retaining the gram-conscious weights of traditional bladed spokes. SAPIM ALLOY NIPPLES All CZR i23 wheels feature time-tested Sapim alloy nipples to further reduce overall wheel weight while still exceeding the durability requirements of gravel. COUNTLESS CONFIGURATIONS CZR i23 wheels are available in a 24-spoke option for riders looking to minimize weight and increase compliance, while the 28-spoke versions are best for heavier or more aggressive riders who prioritize stiffness and durability. All CZR i23 wheels are available with Centerlock or 6-bolt rotor mounts. CZR i23 front wheels use a 12x100mm Frequency hub, but 15mm end caps are also available separately on our Replacement Hub Parts page. WHY CHOOSE CZR I23? Fast and light CZR i23 gravel wheels were designed to minimize weight and maximize compliance on rough gravel roads. With front-wheel weights starting at 620g and rears at 775g, they also deliver the greatest strength-to-weight ratio of any gravel wheelset on the market. We even stand behind them with our Ride With Confidence Guarantee for those few-and-far-between crash replacement cases. Read below for more info.

- Position Rear - Wheel Diameter/ISO 700C / 622 - Axle Type QR - Hub Spacing 135mm - Wheel-Brake Comp. Rim - Freehub Body Shimano HG - 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 FH-T610 - Wheel Weight - - Spoke Type DT Stainless - Valve Presta - Rim External Width 24mm - Depth 17.5mm - Rim Model Mavic A119 - Skewers Included Yes

- 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 Acera HB-T3000 - Wheel Weight - - Spoke Type DT Stainless - Valve Presta - Rim External Width 24mm - Depth 17.5mm - Rim Model Mavic A119 - Skewers Included Yes

- Quest centerlock hubs, Pillar Wing 20 spokes, and external nipples for the ideal gravel wheel set, built to withstand your hardest rides on your most adventurous weekends! - Wide rim platform for modern gravel tires. - Boasting a 26mm internal width, the updated Jocassee goes to a shallower and lighter 25mm depth. This allows the rim weight to go down to 353 grams in a 700c.