ProX DT350 Super Wide Gravel Wheels | 32mm Inner Width Carbon Rims For Maximum Stability
| Wheel Model | 350DB-PXG32-40C | 350DB-PXG32-45C | 350DB-PXG32-50C |
| Rim Sectional Drawing |  |
 |
 |
| Carbon Rim Model | PXG32-40C | PXG32-45C | PXG32-50C |
| Carbon Rim Depth | 40mm | 45mm | 50mm |
| Carbon Rim Width | 37.5mm Outer (32mm Inner) | 37.5mm Outer (32mm Inner) | 37.5mm Outer (32mm Inner) |
| Carbon Rim Surface | UD Black Matte Finish | UD Black Matte Finish | UD Black Matte Finish |
| Carbon Rim Material | Toray T700 Carbon | Toray T700 Carbon | Toray T700 Carbon |
| Carbon Spokes | Pillar 1423 Sapim CX-Ray |
Pillar 1423 Sapim CX-Ray |
Pillar 1423 Sapim CX-Ray |
| Wheel Weight (+/-3%) | 1559g | 1459g | 1579g | 1479g | 1619g | 1519g |
| Front/Rear Hubs | DT350 | DT350 | DT350 |
| Front/Rear Hub Size | 12x100mm/12x142mm | 12x100mm/12x142mm | 12x100mm/12x142mm |
| Front/Rear Holes Count | 24H/24H | 24H/24H | 24H/24H |
| Brake Type | Disc Brake (Center Lock) | Disc Brake (Center Lock) | Disc Brake (Center Lock) |
| Tire Type | Tubeless or Clincher | Tubeless or Clincher | Tubeless or Clincher |
| Tire Size (Recommended) | 700x44C-70C | 700x44C-70C | 700x44C-70C |
| Max Weight Limit | 120kg/265lb | 120kg/265lb | 120kg/265lb |
Gravel carbon rims need to balance durability with adaptability across varied terrain. ProX super-wide gravel rims feature a 32 mm internal width, optimized for high-volume 700×44C–70C tires. Available in 40 / 45 / 50 mm depths, this range delivers a strong balance of performance for mixed-terrain riding. The U-shaped rim profile is designed to improve tire support and overall stability. The wide 32 mm internal width allows larger tires to maintain a more natural, rounded shape, enhancing grip, comfort, and shock absorption on loose surfaces such as gravel, dirt, and mud. It also helps reduce the risk of tire rollover during aggressive cornering or technical descents. This platform is built to accommodate the growing trend toward wider gravel tires.
Rim Depth Options: 40mm vs. 45mm vs. 50mm
40mm – Best for technical and unpredictable conditions. The shallower profile improves handling, reduces weight, and offers better crosswind stability, making it ideal for steep climbs and tight trails.
45mm – A well-balanced all-round option. It delivers improved aerodynamic performance over shallower rims while maintaining a moderate weight, suitable for mixed gravel and paved sections.
50mm – Optimized for speed on smoother terrain and fast gravel riding. The deeper profile enhances aerodynamic efficiency and helps maintain momentum, with a slight increase in weight.
◂ 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.
 |
Carbon Fiber Material Our carbon gravel rims are manufactured using premium Toray T700 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 carbon prepreg enables a lightweight gravel 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. |
 |
Wider Inner Width With super wide 32mm internal width, these carbon rims are optimized for modern 700×45C–60C gravel 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. |
 |
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 bike carbon wheels 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. |
 |
DT Swiss 350 HubsDT Swiss 350 disc brake hubs offer dependable performance at a competitive price point. Featuring the proven Ratchet System and straight-pull spoke design for efficient power transfer and long-term reliability. |  |
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. |
 |
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. |
Copyright © 2021-2026 Xiamen ProX Carbon Composite Technology Co., Ltd. All Rights Reserved.
