Wheels

Upgrade your road bike with Zipp’s 30 Course Disc wheels. Featuring stiff, light 26mm-deep Zipp aluminum rims, Zipp's precision 77D/177D disc hubs and Sapim's outstanding CX-Ray spokes, these hoops maximize your power transfer for superior acceleration, climbing and handling. They also boast a 25mm-wide tire bed for running wider tires to improve the ride even more and minimize pinch flats.

Upgrade your road bike with Zipp’s 30 Course Disc wheels. Featuring stiff, light 26mm-deep Zipp aluminum rims, Zipp's precision 77D/177D disc hubs and Sapim's outstanding CX-Ray spokes, these hoops maximize your power transfer for superior acceleration, climbing and handling. They also boast a 25mm-wide tire bed for running wider tires to improve the ride even more.

Upgrade your road bike with Zipp’s 30 Course Disc wheels. Featuring stiff, light 26mm-deep Zipp aluminum rims, Zipp's precision 77D/177D disc hubs and Sapim's outstanding CX-Ray spokes, these hoops maximize your power transfer for superior acceleration, climbing and handling. They also boast a 25mm-wide tire bed for running wider tires to improve the ride even more.

With a 45mm deep rim optimized for low aerodynamic drag and predictable handling in all riding conditions. The 302 achieves this at a price point that makes Zipp carbon quality and performance more attainable than ever. The 302’s Indianapolis-made smooth carbon rim is mated to Zipp's new J-bend hubs to assemble a wheel that is both fast and reliable. Assembled by hand in Indianapolis with 24 Belgian Sapim CX-Sprint spokes up front and 24 out back, the 302 is equally suited to training rides or duking it out at your local criterium series. - Rim shape optimized for low aerodynamic drag and predictable handling in all riding conditions - Carbon Clincher - J-bend hubset - Thru-axle compatible - XDR Driver Body Compatible - Center lock - disc-brake only

If perfection is the standard, then the 303 Firecrest Carbon Clincher wheelset delivers everything you could ask for, including a heritage forged in the Spring Classics. At the center of the 303 Firecrest Carbon Clincher is the 77/177 hubset, an innovation that results in improved aero performance, stiffness, braking, durability, simplicity, and versatility. The 303 Firecrest is light enough to climb up the steepest gradients with ease as a go-to all-around wheelset. - Improved 45mm rim profile – fast, stable, and versatile - ABLC Sawtooth dimple design helps manage airflow around the rim for a faster, more stable wheel - Industry leading Showstopper brake track: powerful and consistent braking, even on wet terrain - 77/177 hubset, reliable & durable, proven in the Spring Classics, no pre-load adjustment required - Sapim spokes & nipples - ISO 4210 compliant. See Declaration of Conformity for details

The 303 brings a lot to the table, including heritage proven in the world's hardest races. At the center of the wheelset is Zipp's 77/177 hubset, which results in improved stiffness, durability, simplicity and versatility. The carbon wheel that helped pioneer the Firecrest rim platform for improved aerodynamics and crosswind stability also features the unspoken durability that has repeatedly won Paris Roubaix and the Tour of Flanders - Firecrest rim technology affords the rider more speed, more stability, and more strength. This technology offers stable, predictable handling, and the wider rim increases lateral stiffness while offering greater vertical compliance - Each wheel includes Zipp quick release skewer, end caps that can be swapped to run 12mm or 15mm thru axle; 1 Zipp 700c X 20mm rim tape, and 1 Zipp tubeless valve - 303 Firecrest Carbon Clincher Tubeless Disc Brake total wheelset weight is 1645 grams

Road bikes are going where they’ve never gone before, are expected to do more, and are being ridden harder than ever. At the same time disc brakes are rewriting the rules of what’s possible with rim design. For this new era, the Zipp 303 Firecrest Tubeless Disc-brake wheelset sets the new standard. With a disc-specific, tubeless rim, the 303 Firecrest Carbon Clincher is now internally 21mm wide and faster than ever. Designed from the start as a tubeless rim, the 303 Firecrest features a rim bed made with internal ridges to lock the tire’s bead in place, ensuring secure performance, even when ridden at lower tire pressures. A new carbon fiber layup keeps weight low while maintaining the 303’s legendary durability. The rim’s lightweight design allows the 303 to glide up the steepest climbs while SRAM's robust 77/177D hubset keep the wheels stiff and responsive. Each Wheel Includes: - Zipp Tubeless valve extender and valve-core wrench - Zipp rim tape (factory taped) - Zipp Tangente quick-release skewer - Zipp thru-axle end caps

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 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)

If you had to choose just one wheel, the 404 Firecrest Carbon Clincher should be your choice. With the depth and shape proven in all conditions, it’s the all-around performer and the standard by which all other wheels are measured. Its 58mm rim depth is a classic that has carried athletes to victory in every kind of event and situation – every triathlon distance, breakaways, field sprints, and hilly finishes. At the center of the 404 Firecrest is Zipp’s 77/177 hubset with best-in-class durability, bearing protection with no pre-load adjustment needed. The result is improved braking (Showstopper), aero performance, stiffness, durability, simplicity, and versatility. - New, faster, more stable rim profile - AeroBalance - ABLC SawTooth dimples pattern - Showstopper brake track - 10- or 11- speed compatible - XDR option - Handcrafted in the USA

The 454 NSW Carbon Clincher Disc-brake delivers aerodynamic efficiency and crosswind stability that far surpasses conventionally shaped wheels with the superior modulation and stopping power of disc brakes. The 454 NSW’s undulating 53/58mm-deep rim shape takes cues from some of nature’s most elegant design solutions and combines them with engineering precision for unrivaled durability and performance while delivering a level of AeroBalance unlike any wheel ever made. Zipp engineers have optimized the biomimicry-derived 454 NSW for the ultimate in all conditions braking control—disc brakes. This marks the first NSW wheelset available for disc brakes, offering cyclists the greatest AeroBalance with the superior modulation and stopping power of disc brakes. It is the ultimate mid-depth wheel for all-around road performance. - Hyperfoil - Cognition Disc-brake hubset - ImPress graphics - HexFin ABLC dimple pattern - Carbon Clincher - AeroBalance - Handcrafted in the USA

Zipp optimized its Firecrest technology to build a highly aerodynamic 82mm rim—the 808 Firecrest Carbon Clincher. Designed for efficient power transfer and stable control in time trial and triathlon competition, the 808's wide 27.5mm rim shape provides confident tracking in crosswinds and over rough surfaces. Built with Zipp's excellent 77/177 hubset that features optimized flange geometry and Sapim CX-Sprint spokes to increase lateral stiffness, this 1,1885-gram wheelset combines toughness and reliability in a wind-shedding package that has to be ridden to fully appreciate. Each wheel includes specially-designed Tangente Platinum Pro Evo brake pads, Zipp Integrated Valve Extender with valve-core wrench, rim tape, and quick release.

Optimizing wheels to perform with precision and control at the depth of the 808 Firecrest Carbon Clincher is pure engineering science. While the 808 Firecrest’s aerodynamics and stability are proven every weekend in road races, triathlons and time trials around the world, understanding how profoundly good these wheels only comes from riding the wheel that, as a set, have proven faster than any other. At the center of the 808 Firecrest Carbon Clincher is Zipp’s 77/177 hubset with best-in-class durability and improved bearing protection with no pre-load adjustment needed. The result is improved braking (Showstopper), aero performance, stiffness, durability, simplicity, and versatility. - New, faster, more stable rim profile - AeroBalance - ABLC SawTooth dimples pattern - Showstopper brake track - 10- or 11- speed compatible - XDR option - 77/177 hubset - Handcrafted in the USA

With the introduction of the radical biomimicry-derived 454 NSW Carbon Clincher, Zipp proved that aero efficiency and crosswind stability are not mutually exclusive aero wheel design goals. Using a similar Sawtooth rim design, the 858 NSW wheelset goes 24 millimeters deeper than the 454 and delivers even greater gains in aero efficiency while providing a level of rider control in crosswinds that was previously unthinkable with conventional deep-section wheel designs. By eliminating concerns over control, the 858 NSW ushers in a new era where aerodynamically efficient deep-section wheels are no longer a race-day-only option—they’re everyday wheels. Adding to the 858’s versatility, its lightweight and laterally stiff rim imparts a level of responsiveness previously only attributed to much shallower wheels, keeping bike handling lively and quick. The 858 delivers the best braking available thanks to Zipp's NSW-exclusive Showstopper brake track found on the rim brake version of the 858 NSW. Designed for road or triathlon applications, the 858 NSW’s advanced aero efficiency, crosswind stability, responsive handling, and unrivaled braking are engineered to make what was once impossible…possible. - Sawtooth rim with Hyperfoil nodes - Rim depth of 77/82mm - Cognition hubset - Axial Clutch technology - ImPress graphics - HexFin ABLC dimple pattern - ShowStopper - AeroBalance - Handcrafted in the USA

With the introduction of the radical biomimicry-derived 454 NSW Carbon Clincher, Zipp proved that aero efficiency and crosswind stability are not mutually exclusive aero wheel design goals. Using a similar Sawtooth rim design, the 858 NSW wheelset goes 24 millimeters deeper than the 454 and delivers even greater gains in aero efficiency while providing a level of rider control in crosswinds that was previously unthinkable with conventional deep-section wheel designs. By eliminating concerns over control, the 858 NSW ushers in a new era where aerodynamically efficient deep-section wheels are no longer a race-day-only option—they’re everyday wheels. Adding to the 858’s versatility, its lightweight and laterally stiff rim imparts a level of responsiveness previously only attributed to much shallower wheels, keeping bike handling lively and quick. The 858 delivers the best braking available thanks to Zipp's NSW-exclusive Showstopper brake track found on the rim brake version of the 858 NSW. Designed for road or triathlon applications, the 858 NSW’s advanced aero efficiency, crosswind stability, responsive handling, and unrivaled braking are engineered to make what was once impossible…possible. - Sawtooth rim with Hyperfoil nodes - Rim depth of 77/82mm - Cognition hubset - Axial Clutch technology - ImPress graphics - HexFin ABLC dimple pattern - ShowStopper - AeroBalance - Handcrafted in the USA

SRAM's Rise wheels strike a wonderful balance of weight, stiffness and looks. They give you the right ride for XC, endurance and even some all-mountain ripping. The lightweight aluminum rim and durable hub work together for quicker bursts of speed, tighter turns, less rolling resistance and easier climbing. Every wheel connects you to the ground, only a few let you Rise to new heights.

SRAM's Rise wheels strike a wonderful balance of weight, stiffness and looks. They give you the right ride for XC, endurance and even some all-mountain ripping. The lightweight aluminum rim and durable hub work together for quicker bursts of speed, tighter turns, less rolling resistance and easier climbing. Every wheel connects you to the ground, only a few let you Rise to new heights.

Fast, light, great handling. Pick three. This no-compromise do-it-all classic continues to set the bar for premium alloy wheelsets. They offer best-in-class aerodynamics, and for a disc brake wheelset at just 1640g, they rival the weight of many manufacturer's carbon hoops — without sacrificing stiffness or durability. They're perfect for all-season training, yet light enough for Strava-slaying. It's no wonder the Vigor is our all-time best-selling wheelset. The Vigor disc brake wheelset features a 19.5mm internal width tubeless-compatible rims and our T2 high engagement drive system for quick-spinning and fast-accelerating performance you can rely on for years.

These aerodynamic performers are engineered for both training and racing based on the technologies that made the Vigor family our most popular. With a combination of weight, stiffness, and aerodynamics that other manufacturer's wheels can't touch, the Vigor ES delivers no-compromise performance built to the same rigorous standards as their top-flight cousins. The Vigor ES Disc features a wider internal width of 19.5mm and uses all-black disc rims for all-weather stopping power that are great for road, gravel, or triathlon.

Quality Wheels Value Series Disc Front Wheel 29 SRAM 406 6-bolt / Sun SR25 Black

The Quadrant Front Wheel features the C5 Front Hub laced to the Quadrant Rim, for a lightweight and affordable option. - C5 Front Hub - 36H, 6061 T-6 aluminum hub shell with 15mm 4130 chromoly female axle - 6902 sealed cartridge bearings - 3/8" heat-treated chromoly axle bolts w/17mm wrench flats and 6mm hex slots - Replaceable plastic hub guards (compatible with Odyssey/G-Sport hubs)

The ENVE 45 is a modern multi-purpose road wheel in every way. Riders with inclinations toward racing and hard solo efforts will find the rim's drag-taming and cross-wind defying shape a welcome upgrade to their rides. Those with inclinations towards the road lost and forgotten will find the rim's width and anti-pinch flat technology complementary to higher-volume tubeless road tires. All said, the ENVE 45 is everything that the dynamic modern road rider needs, and nothing that they don't. - Application: Road, Road Race, Triathlon, All-Road - Internal Rim Width: 21mm - Tire Compatibility: Tubeless 25c or larger - Wheelset Weight: 1541g - Real World Foundation Aero Technology - Wide Hookless Bead provides pot-hole protection - Tubeless Optimized for Rolling Fast and Fewer Flats - Lifetime Incident Protection and 5 Year Factory Warranty - Handmade in Ogden, Utah

Versatile, aero, light, and fast. The SES 3.4 has been a staple in the SES wheel family, and the newest iteration takes the best features of the previous generation SES 3.4 and 3.4 AR to make the ultimate modern road wheelset. There’s simply nothing more versatile than the SES 3.4. - Carbon fiber consctruction using continuously running fibers throughout the rim, tapering laminates, and removing excess material - 38mm front and 42mm rear rim depths maximize aerodynamic efficiencies, reduces weight and manage crosswind riding conditions with ease - Hookless bead tubeless technology reduces weight, improves comfort, maintains strength, and ensures an exacting rim bead seat - Premium Road Hubs bring efficiency, longevity, and simplicity: Cold-forged and machined 6061 alloy for durable lightweight performance - Tubeless and disc brake only

Zipp's 101 XPLR is a purpose-built wheel for gravel. Thanks to MOTO Technology, this wheel arms gravel cyclists with more control and durability over harsh terrain, providing a smooth ride quality that helps reduce fatigue. That means a more comfortable ride. The 101 XPLR—short for explore-is purpose—built for riders searching for adventure beyond the norm. Think of it as a magic carpet ride over primitive roads, especially with large tubeless tires at lower tire pressures. This wheel is ideal for gravel racing, adventure, or any long day in the saddle. Based on Zipp's MOTO Technology, the 101 XPRL's single-wall rim construction provides excellent compliance and vibration damping. Less fatigue, allows you to ride longer and faster. The 101 XPLR features the ZR1 hubset for better seal design for improved durability and quicker response with 66 points of engagement. With 101 XPLR, victory is in the pursuit of adventure. - All-day comfort and compliant ride - Available in 700c or 650b - 27mm wide internal profile - Reduced chance of pinch flatting - More traction in rough corners - Smoother ride in rocky terrain - Ability to run lower tire pressure - Less fatigue, which allows you to ride longer and faster - Frustration-free tire installation - ZR1 hubset for better seal design for improved durability and quicker response with 66 points of engagement - Lifetime Warranty

Zipp's 101 XPLR is a purpose-built wheel for gravel. Thanks to MOTO Technology, this wheel arms gravel cyclists with more control and durability over harsh terrain, providing a smooth ride quality that helps reduce fatigue. That means a more comfortable ride. The 101 XPLR—short for explore—is purpose-built for riders searching for adventure beyond the norm. Think of it as a magic carpet ride over primitive roads, especially with large tubeless tires at lower tire pressures. This wheel is ideal for gravel racing, adventure, or any long day in the saddle. Based on Zipp's MOTO Technology, the 101 XPRL's single-wall rim construction provides excellent compliance and vibration damping. Less fatigue, allows you to ride longer and faster. The 101 XPLR features the ZR1 hubset for better seal design for improved durability and quicker response with 66 points of engagement. With 101 XPLR, victory is in the pursuit of adventure. - All-day comfort and compliant ride - Available in 700c or 650b - 27mm wide internal profile - Reduced chance of pinch flatting - More traction in rough corners - Smoother ride in rocky terrain - Ability to run lower tire pressure - Less fatigue, which allows you to ride longer and faster - Frustration-free tire installation - ZR1 hubset for better seal design for improved durability and quicker response with 66 points of engagement - Lifetime Warranty

Riding is believing with the Zipp 1ZERO HITOP SW MTB wheelset when it comes to making you faster. Trail compliance is vital, with modern cross-country races becoming rougher and more challenging. No longer is it good enough for an XC wheelset to be stiff above all else. Instead, a wheelset should feel alive. The 1ZERO HITOP SW carbon rim complies with the terrain thanks to Zipp's proprietary HITOP Technology for carbon layup. The result is a lightweight XC wheel that carries speed through all sections of the trail, rocks, roots, and ruts with the durability required for a trail bike with up to 130mm of travel. A compliant wheel provides more confidence. You don't have to work hard to spin it up to speed or fight your bike when things get chunky. The 1ZERO HITOP SW also comes with the TireWiz tire-pressure monitoring system, so you'll always have your tire pressure dialed in for optimal performance. Among the lightest on the market, the ZM2 SL hubset ensures you'll be quick to accelerate and back on the pedals sooner after corners with the 1ZERO HITOP SW. - HITOP Technology produces proprietary rim layup to provide compliance and confidence when the trail gets rough - Low weight for effortless accelerations and climbing - Winged rim provides a smooth resting surface for the tire, reducing the chance of pinch flats after a rock hit - TireWiz 2.0 tire-pressure monitoring system features a seamless design - ZM2 SL hub with 66 points of engagement - Standard or Torque Cap options on the front hub - XD or Microspline driver-body options - Lifetime Warranty

The 1Zero HiTop S wheelset melds high value with high performance for a better and faster ride. Trail compliance is vital, with modern cross-country courses becoming rougher and more challenging. No longer is it good enough for an XC wheelset to be stiff above all else. Instead, a wheelset should feel alive. The 1Zero HiTop S carbon rim complies with the terrain thanks to Zipp’s proprietary HITOP Technology for carbon layup. The result is a light XC race or adventure wheel that carries speed through all sections of the trail, rocks, roots, and ruts with the durability required for a trail bike with up to 130mm of travel. A compliant wheel provides more confidence. The 1Zero HiTop S features the dependable ZM 900 hubset. - Carbon – 24H Hookless rim, compatible with Tube-type or Tubeless tires - HITOP Technology produces proprietary rim layup to provide compliance and confidence when the trail gets rough - Low weight for effortless accelerations and climbing - Winged rim provides a smooth resting surface for the tire, reducing the chance of pinch flats after a rock hit - Sapim CX Sprint spokes laced to the ZM 900 SL hub with standard or Torque Cap options - Lifetime Warranty - Compatible with TyreWiz tire pressure monitoring system, sold separately

The 1Zero HiTop S wheelset melds high value with high performance for a better and faster ride. Trail compliance is vital, with modern cross-country courses becoming rougher and more challenging. No longer is it good enough for an XC wheelset to be stiff above all else. Instead, a wheelset should feel alive. The 1Zero HiTop S carbon rim complies with the terrain thanks to Zipp’s proprietary HITOP Technology for carbon layup. The result is a light XC race or adventure wheel that carries speed through all sections of the trail, rocks, roots, and ruts with the durability required for a trail bike with up to 130mm of travel. A compliant wheel provides more confidence. The 1Zero HiTop S features the dependable ZM 900 hubset. - Carbon – 24H Hookless rim, compatible with Tube-type or Tubeless tires - HITOP Technology produces proprietary rim layup to provide compliance and confidence when the trail gets rough - Low weight for effortless accelerations and climbing - Winged rim provides a smooth resting surface for the tire, reducing the chance of pinch flats after a rock hit - Sapim CX Sprint spokes laced to the ZM 900 SL hub with XD Driver and 52 points of engagement - Lifetime Warranty - Compatible with TyreWiz tire pressure monitoring system, sold separately

The 1Zero HiTop SW carbon rim complies with the terrain thanks to Zipp’s proprietary HITOP Technology for carbon layup. The result is a lightweight XC wheel that carries speed through all sections of the trail, rocks, roots, and ruts with the durability required for a trail bike with up to 130mm of travel. A compliant wheel provides more confidence. You don’t have to work hard to spin it up to speed or fight your bike when things get chunky. The 1Zero HiTop SW also comes with the TyreWiz tire-pressure monitoring system, so you’ll always have your tire pressure dialed in for optimal performance. Among the lightest on the market, the ZM2 SL hubset ensures you’ll be quick to accelerate and back on the pedals sooner after corners with the 1Zero HiTop SW. - Carbon – 24H Hookless rim, compatible with Tube-type or Tubeless tires - HITOP Technology produces proprietary rim layup to provide compliance and confidence when the trail gets rough - Low weight for effortless accelerations and climbing - Winged rim provides a smooth resting surface for the tire, reducing the chance of pinch flats after a rock hit - TyreWiz 2.0 tire-pressure monitoring system included - Sapim CX Ray spokes laced to the ZM2 SL hub with standard or Torque Cap options - Lifetime Warranty

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