ProX C52DB Gravel Wheelset | 21mm Inner Width Gravel Carbon Wheels for Versatile Riding
| Wheel Model | C52DB-PCX33 | C52DB-PCX44 | C52DB-PZX33 | C52DB-PZX44 |
| Rim Sectional Drawing |  |
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| Carbon Rim Model | PCX33 | PCX44 | PZX33 | PZX44 |
| Carbon Rim Depth | 33mm | 44mm | 33mm | 44mm |
| Carbon Rim Width | 28mm Outer (21mm Inner) | 28mm Outer (21mm Inner) | 28mm Outer (23mm Inner) | 28mm Outer (23mm Inner) |
| Rim Bead | Hook | Hook | Hookless | Hookless |
| Carbon Rim Surface | UD Black Matte Finish | UD Black Matte Finish | UD Black Matte Finish | UD Black Matte Finish |
| Carbon Rim Material | Toray T700+T800 Carbon | Toray T700+T800 Carbon | Toray T700+T800 Carbon | Toray T700+T800 Carbon |
| Carbon Spokes | Pillar 1423 Sapim CX-Ray |
Pillar 1423 Sapim CX-Ray |
Pillar 1423 Sapim CX-Ray |
Pillar 1423 Sapim CX-Ray |
| Wheel Weight (+/-3%) | 1480g | 1380g | 1540g | 1440g | 1480g | 1380g | 1540g | 1440g |
| Front/Rear Hubs | ProX C52DB | ProX C52DB | ProX C52DB | ProX C52DB |
| Front/Rear Hub Size | 12x100mm/12x142mm | 12x100mm/12x142mm | 12x100mm/12x142mm | 12x100mm/12x142mm |
| Front/Rear Holes Count | 24H/24H | 24H/24H | 24H/24H | 24H/24H |
| Brake Type | Disc Brake (Center Lock) | Disc Brake (Center Lock) | Disc Brake (Center Lock) | Disc Brake (Center Lock) |
| Tire Type | Tubeless or Clincher | Tubeless or Clincher | Tubeless or Clincher | Tubeless or Clincher |
| Tire Size (Recommended) | 700x30C-50C | 700x30C-50C | 700x30C-50C | 700x30C-50C |
| Max Weight Limit | 120kg/265lb | 120kg/265lb | 120kg/265lb | 120kg/265lb |
◂ Spokes ▸
Using popular Pillar PSR AERO 1423 spokes.
Pillar patented cold forge technology is applied in the spoke production which increase the strength up to 20%.
Perfect aero shape, high elasticity and low drag coefficient.
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Carbon Fiber MaterialThis series gravel carbon rims are manufactured using premium Toray T700+T800 carbon fiber, combined with a stable resin system to ensure consistent quality and a lightweight structure for off-road cycling. |  |
Light Weight Design A carefully engineered lay-up structure using Toray T700+T800 carbon prepreg enables a lightweight carbon rims. Excess material is minimized to reduce weight, while reinforcement around the spoke holes ensures structural strength. The result is low weight without compromising strength or stiffness. |
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Wider Inner Width With 21mm inner width (hook version) and 23mm inner width (hookless) , these gravel carbon rims are optimized for modern 700×35C–45C tires and remain compatible with even wider tires. The increased width provides better tire support, simplifies installation and removal, and enhances traction and cornering stability. |  |
Aero U-Shape Profile The wide U-shaped rim profile offers improved aerodynamic efficiency compared to traditional V-shaped designs, helping to reduce drag at higher speeds. It also enhances airflow stability in crosswinds, while contributing to increased stiffness and overall structural strength. |
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Bead Lock Design Subtle ridges along both sides of the carbon rim channel—known as bead locks—help facilitate easier tubeless tire inflation. Combined with a hooked bead design, they ensure a secure tire fit and reduce the risk of blowouts. |  |
Tubeless Ready Tubeless setups are mainstream in for gravel wheelset due to improved grip, lower rolling resistance, and enhanced comfort. All of our gravel carbon rims are tubeless compatible while still supporting standard inner tubes. An optimized anti-burp profile ensures straightforward tire installation, removal, and inflation. |
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ProX C52DB HubsProX C52DB hubs provide reliable performance at a competitive price. Equipped with a 36T ratchet freehub system and ceramic bearings for consistent engagement and smooth rotation. Custom logo etching is supported. |  |
Pillar SpokesPillar PSR AERO 1423 spokes are a popular choice for performance wheelsets. Their patented cold forging process increases strength by up to 20%, while maintaining a lightweight aero profile. Effective combination of elasticity, durability, and aerodynamics. |
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Disc BrakeDisc brake provide more precise and consistent braking than rim brakes. These carbon rims are purpose-built for disc use, eliminating the brake track and avoiding heat-related issues. A dedicated carbon lay-up enhances durability while keeping weight low. |  |
2-Year Warranty Our production process includes strict quality control and comprehensive testing to ensure reliable performance. All ProX carbon rims and wheels are backed by a 2-year warranty from the date of delivery. Full details are on our Warranty Policy page. |
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