ProX Mid-range Gravel Carbon Bike Wheel C52DB Ratchet System 700C Gravel Wheel

• Affordable gravel carbon wheels, priced from USD359/pair

Hubs with ceramic bearings, Ratchet 36T freehub system

Bladed Pillar 1423 Spokes, aero & strong

• 28/33/44mm height gravel carbon rims optional

• Compatible for 700*30C-50C tire

  • Brand:

    PROX
  • Item NO.:

    C52DB Gravel Wheel
  • Payment:

    Paypal, Bank Transfer
  • Origin:

    China
  • Color:

    UD/3K/12K(Customized Decal Acceptable)
DESCRIPTION

ProX C52DB Disc Brake Gravel Bike Carbon Wheelset - Ratchet 36T Hub With Affordable Price

Considering the price of DT Swiss hubs increases quickly, and lead time is getting longer and longer, ProX Carbon has developed our own mould disc brake hubs (called C52DB). 

Reliable quality hubs made by well-known hub manufacturer in Taiwan.

ProX C52DB carbon wheel with Ratchet 36T freehub system

ProX C52DB disc brake hubs feature ceramic bearings by TPI brand and only 344~355g/pair with different freehub bodies. Hubs are designed with Ratchet 36T freehub system which improves power transfer efficiency, combining with ceramic bearings, the rolling resistance is minimized. Such hubs help you to shorten acceleration time and save energy. Ceramic bearings are smoother, rounder and with more uniform size. In that case, the friction is reduced and that can contribute more energy to the wheels. Ceramic bearing is also harder than steel bearings (up to 30%), which improves durability, and they also don’t rust for less maintenance. The ratchet freehub system is applied on high-end hub brand hubs generally, such as DT swiss hubs. 
In addition, C52DB hubs can be made with your customized logo (either etch logo or make stickers). So it will become your own brand hubs!

ProX C52DB hubs with Ratchet 36T freehub and ceramic bearing

disc brake hubs for Shimano Micro Spline SRAM, Campagnolo N3W
Shimano HG 11/12s
SRAM XDR 12s

Shimano Micro Spline Road (MSR)

Campagnolo N3W

All of the carbon bike rims will feature angled spoke holes, which will better align the spokes with hub flanges, and decrease the amount of spoke bend required when building.

ProX provides two versions for our C52DB disc brake carbon gravel bike wheels. That is, bead hook and hookless.

For riders who plan to use gravel bikes more like a MTB hardtail bike, and will use tubeless tire at lower tire pressure (not exceed 50psi), hookless is a good option.
For riders who plan to use gravel bike more like a road bike, and prefer higher tire pressure (max 90psi), bead hook is recommended.
According to our sales record, PCX33 (33mm height bead hook) gravel carbon rim is most popular among our customers.
If you are interested in disc brake carbon wheels built with our URD (undulating rim depth carbon rims), please click the link or contact us for more details. 

carbon wheels with undulating rims

SPECIFICATION

PoX C52DB Disc Brake Carbon Gravel Bike Wheels Specificaton:
-Hub: ProX C52DB hubs, disc brake, Ratchet 36T freehub system, (front 12*100mm TA/rear 12*142mm TA)

-Disc Brake Type: center lock
-Cassette Body: Shimano HG 11/12s, SRAM XDR 12s, Shimano Micro Spline Road (MSR), Campagnolo N3W
-Type: straight pull
-Spoke Hole Count: front 24H and rear 24H
-Tire Type: Clincher/Tubeless ready
-Spoke: Pillar 1423 spoke

-Spoke Tension (recommended): ≤145kgf

130~140 kgf on rear drive side and front non-drive side
-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


ProX Carbon Gravel Wheelset with C52DB Ratchet System Hubs 

Model Rim Rim Bead Depth Outer Width Tire Type Hub Front Size Rear Size Spoke
Tire Size
(Recommended)
Weight
(+/-3%)
C52DB-PCX28-1423 PCX28 Hook 28mm 29mm Tubeless or Clincher ProX C52DB Disc 12*100mm 12*142mm Pillar 1423 700*30C-50C 1440g
C52DB-PCX33-1423 PCX33 Hook 33mm 28mm Tubeless or Clincher ProX C52DB Disc 12*100mm 12*142mm Pillar 1423 700*30C-50C 1480g
C52DB-PZX33-1423 PZX33 Hookless 33mm 28mm Tubeless or Clincher ProX C52DB Disc 12*100mm 12*142mm Pillar 1423 700*30C-50C 1480g
C52DB-PCX44-1423 PCX44 Hook 44mm 28mm Tubeless or Clincher ProX C52DB Disc 12*100mm 12*142mm Pillar 1423 700*30C-50C 1540g
C52DB-PZX44-1423 PZX44 Hookless 44mm 28mm Tubeless or Clincher ProX C52DB Disc 12*100mm 12*142mm Pillar 1423 700*30C-50C 1540g


700C Cyclocross/Gravel Bike Carbon Clincher Rims (Tubeless Ready)

Rims PCX28 PCX33 PZX33 PCX44 PZX44
Max Weight Limit 110kg/240lb 120kg/265lb 120kg/265lb 120kg/265lb 120kg/265lb
Material T700+T800 T700+T800 T700+T800 T700+T800 T700+T800
Sectional Drawing carbon gravel rims PCX28 drawing carbon gravel rims PCX33 drawing carbon gravel rims PZX33 drawing carbon gravel rims PCX44 drawing carbon gravel rims PZX44 drawing

TECHNOLOGY
Carbon Fiber Material

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 carbon fiber bike rims.

Light Weight

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.

Narrow Inner Width

Wider Inner Width

Relatively wide 21mm/23mm inner width, make it possible to fit multiple sizes of tire.

Normally gravel tire size 700x30C-50C are recommended.

Aero U Shape

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. 

Tubeless Ready

Tubeless Ready

Tubeless tire is getting popular in 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. 

Road Disc Brake

Disc Brake

Gravel disc brake provides more sensitive and precise braking performance than rim brake.

Carbon fiber 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.

Hand Built

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.

ProX Road Hubs

ProX C52DB Disc Hubs

ProX own mould C52DB hubs are used. High quality hubs with good price.

C52DB disc brake hubs are designed with Ratchet 36T freehub system, and with ceramic bearings inside.

Such hubs can also be etched with your customized logo.

12*100/12*142 thru-axle, with Shimano 11/12 speed or SRAM XDR 12 speed cassette body.

Pillar Spokes

Pillar Spokes

The popular Pillar PSR AERO 1423 spokes are used. 

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.

2-Year Warranty

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.

VIDEO



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