700c, 27-Inch & 650c

- GVL stands for gravel, and Greenville, SC where Boyd wheels are handbuilt. - Prologue series wheels are built Skyuka hubs featuring 10-degree engagement and Abec 3 sealed cartridge bearings. - Built with Pillar TB2018 round double butted spokes and external brass nipples, the Prologue is built to be a great budget upgrade that can be ridden hard in even the most demanding conditions.

- A great upgrade over a heavy stock OEM wheel, the Rouleur Disc offers a modern 21mm wide tubeless rim bed. - All Prologue series wheels are built on Skyuka hubs featuring 10-degree engagement and Abec 3 sealed cartridge bearings. - The Skyuka disc brake rear hub is available in a Shimano Hyperglide and Sram XDR freehub body and requires no tools to swap between the different freehub body standards. - Built with Pillar TB2018 spokes and external brass nipples, the Rouleur is a great budget upgrade that can be used for everyday riding.

- GVL stands for gravel, and Greenville, SC where Boyd wheels are handbuilt. - Prologue series wheels are built Skyuka hubs featuring 10-degree engagement and Abec 3 sealed cartridge bearings. - Built with Pillar TB2018 round double butted spokes and external brass nipples, the Prologue is built to be a great budget upgrade that can be ridden hard in even the most demanding conditions.

- The Prologue Series is a series of budget-friendly, economical wheel builds. - By utilizing a more automated layup process (which adds approximately 20 grams per rim), costs are kept down to spec a wheelset that has incredible performance for half to one-third of the costs of premium models. - The Prologue rims feature a hooked tire interface so you can use any tire brand at any pressure and not worry about the catastrophic tire blow-offs that a road hookless rim can suffer. - All Prologue series wheels come with the Skyuka hubs featuring 10-degree engagement and Abec 3 sealed cartridge bearings. - Built with Pillar Aero 1423 spokes and external brass nipples, the Prologue is built to be a great budget upgrade that can be used for everyday riding.

- The Prologue Series is a series of budget-friendly, economical wheel builds. - By utilizing a more automated layup process (which adds approximately 20 grams per rim), costs are kept down to spec a wheelset that has incredible performance for half to one-third of the costs of premium models. - The Prologue rims feature a hooked tire interface so you can use any tire brand at any pressure and not worry about the catastrophic tire blow-offs that a road hookless rim can suffer. - All Prologue series wheels come with the Skyuka hubs featuring 10-degree engagement and Abec 3 sealed cartridge bearings. - Built with Pillar Aero 1423 spokes and external brass nipples, the Prologue is built to be a great budget upgrade that can be used for everyday riding.

- The 44mm Clincher is the the best all-purpose carbon clincher wheelset in the Boyd lineup. - No matter what type of riding you are doing, the 44mm depth with improved aerodynamic profile will be a great option for you.

- The 44mm Clincher is the the best all-purpose carbon clincher wheelset in the Boyd lineup. - No matter what type of riding you are doing, the 44mm depth with improved aerodynamic profile will be a great option for you.

- 45mm deep aerodynamic carbon disc brake wheelset - Wind Tunnel Optimized rim profile, aerodynamic aluminum hubs, and USB ceramic bearings for optimal performance in all conditions - 2-Way Fit tubeless-ready rims with 19mm internal width, optimized for use with wider tires - G3 spoke lacing front and rear for maximum power transfer and braking performance - Black-on-black Dark Label graphics - Only 1520g per pair

The 1/Fifty is a wide, deep profile, full carbon aero rim that successfully blends crosswind stability, stiffness and handling while delivering superior heat dissipation and braking performance by utilizing the same ultra high Tg resin and brake pads as the TwentyFour series wheels. The semi-automated carbon lay-up, rim construction and raw materials proven through the TwentyFour series wheels are exemplified in the 1/Fifty rims. By utilizing components optimized for more efficient production, we are able to deliver a performance wheelset at an aggressive price. Specifications - CFD and wind tunnel developed proprietary carbon fiber 50mm low profile clincher rim. - High TG resin. - Proprietary precision machined alloy hubs. - Sealed cartridge bearings. - Hand-built assembly. - 11/10S Shimano compatible. - Relief along rim bed for center base tape. Each 1/Fifty Wheel Includes - 10spd cassette space. - Profile Design rim tape. - Profile Design quick-release skewers. - Profile Design Carbon-Specific P220 TwentyFour Series brake pads. Front Wheel - Weight: 730g - Size: 700c - Hub: 6061-T6 Alloy - Bearing Size: 6900 - Compatibility: QR - Rim Depth: 50mm - Rim Width (Outside): 24.5mm - Rim Width (Inside): 17mm - Spokes: Sapim Race - Spoke Shape: Straight Pull - Spoke Count: 20 - Spoke Pattern: Radial - Spoke Length: 259mm - Nipples: 7075 Alloy Polyax Double Square - External Nipples: Yes - Max Tire Pressure: 125psi / 8.27 bar - Tire Width: 25-28c Rear Wheel - Weight: 884g - Size: 700c - Hub: 6061-T6 Alloy - Bearing Size: 6802 - Compatibility: Shimano/SRAM: 9/10sp, 11sp w/included spacer - Rim Depth: 50mm - Rim Width (Outside): 24.5mm - Rim Width (Inside): 17mm - Spokes: Sapim Race - Spoke Shape: Straight Pull - Spoke Count: 24 - Spoke Pattern Non-Drive: Radial - Spoke Pattern Drive: 2 cross - Spoke Length Non Drive: 263mm - Spoke Length Drive: 268mm - Nipples: 7075 Alloy Polyax Double Square - External Nipples: Yes - 11-Speed Compatible Hub: Yes - Max Tire Pressure: 125psi / 8.27 bar - Tire Width: 25-28c Wheelset - Set Weight: 1614g - Max Recommended Rider Weight (lbs): 220lbs

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.

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

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

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

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

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)

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)