• Carbon spoke gravel wheels
• 40/45/50mm height optional
• Widened 26mm inner width, for 35C-50C tires
• G71DB hubs with steel bearings, 36T ratchet freehub system
• Shimano HG 11/12s or SRAM XDR optional
Brand:
PROXItem NO.:
G71DB GravelOrder(MOQ):
1Payment:
Paypal, Bank TransferOrigin:
ChinaColor:
Black/UD/Marble(Customized Decal Acceptable):
ProX G71DB Disc Brake Carbon Gravel Wheels
Carbon wheels are the ultimate upgrade when you’re looking to optimize the overall riding experience. This series carbon wheels provide a stiffer ride, improved acceleration and improved aerodynamics.
The G71DB hub is made by well-known Taiwan hub manufacturer and with the reliable quality as usual. It is with straight pull spoke system and 24H with 1:1 spoke ratio for both front and rear wheel. Hubs are with high flanges for better lateral stiffness and handling performance. The weight of hub is only 320g/pair which is light weight. Hubs are designed with DT swiss style Ratchet 36T freehub system which improves power transfer efficiency.
The unique full carbon spoke (only 2.9g/pc!) is customized which is 3.1mm wide aero bladed by default. Such carbon spokes (model CS1) is lighter but stronger than regular steel spokes. The carbon spokes look similar as regular spoke, except for the carbon fiber material and ultra light weight. The weight of our CS1 carbon spoke plus specific aluminum nipple is only 3.2g, which is about 1.8g lighter than well-known Sapim CX-Ray spoke with nipple. The max spoke tension of the carbon spoke is 360kgf according to our in-lab test, which is much higher than test standard (typically 300kgf).
The hubs are designed with thread on end caps, which makes the connection between hub body and end caps much more stable. The tightening torque we recommend for the end caps is 8N.
Hubs: thread-in and internal hex design, please use two hex wrenches(M12) when screwing/unscrewing the caps from hubs.
Please note: Due to the special wheel building tools needed for carbon spoke wheel building, as well as bigger nipple size (around 7mm diameter head, which is larger than Presta valve hole diameter 6.5mm), nipple can not be put into the rim through valve hole. It means No-External-Hole rim can not be built with carbon spokes (which comes with bigger nipple head). Thus, tubeless rim tape is a must if you intend to use tubeless tires. If you prefer No-External-Hole wheels, please choose our other carbon wheels (regular steel spokes).
Cyclocross and gravel carbon wheels demand versatility and durability. ProX gravel bike carbon wheels are designed with 26mm inner width rims, which is suitable for gravel tires with size 700*35C-50C. The 40/45/50mm rim height options strikes a compelling balance for mixed-terrain adventures.
Rim Height Options: 40mm vs. 45mm vs. 50mm
Choosing the right rim height depends on riding style and terrain:
40mm: Ideal for technical, unpredictable terrain. The lower profile prioritizes agility, weight savings, and crosswind stability. Perfect for riders tackling steep climbs or twisty singletrack.
45mm: A versatile middle ground. Balances aerodynamic gains compared to 40mm rim , and with moderate weight. It suits riders mixing paved gravel terrain.
50mm: Maximizes aerodynamic efficiency for fast-paced gravel races or rolling terrain. Slightly heavier on weight but offers noticeable speed retention on smoother surfaces.
ProX G71DB Full Carbon Bike Gravel Wheels with Carbon Spokes Specification:
-Hub: ProX G71DB disc hubs (front 12*100mm TA/rear 12*142mm TA), with steel bearings. Ratchet 36T freehub system
-Decal/Logo: No decal/logo on the rims and hubs by default
-Rim Weave: Black or marble
- Rim Finish: Matte or glossy finish
-Spoke options: 3.1mm width (ProX CS1), aero carbon spokes, made of carbon fiber T800
-Rim depth options: 40/45/50mm
-Disc brake type: center lock
-Cassette Body: Shimano HG 11/12s or SRAM XDR
-Type: straight pull
-Spoke Hole Count: 24 spoke holes(1:1 ratio) on both front and rear
-Tire Type: Clincher/Tubeless compatible
-Nipple: Aluminum(9mm length)
-Spoke Tension(recommended): ≤170kgf
-Tire Pressure: 125psi/8.6bar
-Maintenance Frequency On Hubs:
Standard Use: every 1,000–1,500 km or 3–6 months (whichever comes first).
Harsh Conditions (wet, muddy, dusty): every 500 km or monthly.
Post-Ride Check: clean externally after muddy/rainy rides to prevent grime buildup.
-Warranty Year: 2 years
-Tubeless Valve (not included): 44/60/80mm length optional
| Model | Rim | Depth | Outer Width | Inner Width | Tire Type | Hub | Front Size | Rear Size | Spoke |
Tire Size
(Recommended)
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Weight
(+/-3%)
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| G71DB-PXG26-40C-CS1 | PXG26-40C | 40mm | 31.5mm | 26mm | Tubeless or Clincher | ProX G71DB Disc | 12*100mm | 12*142mm | ProX CS1 | 700*35C-50C | 1292g |
| G71DB-PXG26-45C-CS1 | PXG26-45C | 45mm | 31.5mm | 26mm | Tubeless or Clincher | ProX G71DB Disc | 12*100mm | 12*142mm | ProX CS1 | 700*35C-50C | 1332g |
| G71DB-PXG26-50C-CS1 | PXG26-50C | 50mm | 31.5mm | 26mm | Tubeless or Clincher | ProX G71DB Disc | 12*100mm | 12*142mm | ProX CS1 | 700*35C-50C | 1372g |
700C Cyclocross/Gravel Bike Carbon Clincher Rims (Tubeless Ready)
Rims
PXG26-40C
PXG26-45C
PXG26-50C
Max Weight Limit
120kg/265lb
120kg/265lb
120kg/265lb
Material
T700
T700
T700
Sectional Drawing
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Carbon Fiber Material Premium Toray T700 + T800 carbon fiber are used in our carbon rims. Combining with stable resin system to make consistent quality and light weight undulating carbon road rims.
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Light Weight By using well designed lay-up structure, mixing Toray T700 and T800 carbon prepreg, light weight carbon rims are created. Excessive materials are eliminated to save weight, while extra materials are added around spoke hole for reinforcement. So, light weight is achieved without compromise in strength or stiffness. |
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Wide Inner Width Relatively wide 21mm inner width, make it possible to fit multiple sizes of tire. Normally road tire size 700x28C are recommended (also fit other wider tires).
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Aero U Shape Wide U Shape gravel bike carbon rims are more aerodynamic than traditional V Shape carbon gravel rims. It is also of better stiffness and strength. |
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Tubeless Ready
Tubeless tire is getting popular in road bicycle wheels thanks to its better traction, lower rolling resistance and better riding comfort. All our carbon clincher rims are tubeless ready (also fit normal tube tires). Optimized anti-burp bump design provides easy tire mounting, dismounting, as well as air inflation. |
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Road Disc Brake Road disc brake provides more sensitive and precise braking performance than rim brake. Carbon fiber road bike rims designed specifically for disc brake use, no brake track. No “burning rim” worries during braking. Specific carbon prepreg lay-up design for disc brake rims, longer durability and lighter weight. |
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Hand Built All our bicycle carbon wheels are hand built by experienced mechanician. Based on customers’ demand, various choice of hubs, spokes and nipples are optional. After wheel built, they are trued precisely at high standard (≤0.3mm) on roundness, lateral and center tolerance.
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ProX G71DB Disc Hubs ProX own mould G71DB gravel hubs are used. High quality hubs with cheap price. G71DB road disc brake hubs are designed with ratchet freehub system with steel bearings. Such hubs can also be etched with your customized logo.
12*100/12*142 thru-axle, with Shimano HG 11/12-speed or SRAM XDR cassette body.
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ProX CS Carbon Spokes The customized ProX CS1(3.1mm width) carbon spokes are used. The carbon spoke provides better aerodynamics, stiffness and better fatigue life compared to the traditional steel spokes. Perfect bladed aero shape, high elasticity and low drag coefficient.
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2-Year Warranty We have strict production management system, QC and Testing process. Our quality is always very good and reliable. For all carbon rims and carbon wheels sold by ProX, 2 years’ quality warranty is offered (starting from the date of package being signed).
Click Warranty Policy to see more details in another page. |
Room 204, No.598 South Guankou Road, Xiamen City, 361023, China
Tel : +86-592-7192568
Whatsapp : +86 15159263591
Email : info@proxcarbon.com
Microsoft Teams : Cassie ProX
