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Best Carbon Gravel Wheels 44mm Depth With DT Swiss 240 Ratchet EXP 36 Hub

Hand-built Carbon Gravel Cyclocross disc wheels with DT Swiss 240 EXP straight pull hub and aero Sapim CX-Ray spokes, which is light, stiff, durable and easy to maintain, Perfect transmission of your power and reliability, allowing you to focus on riding. suitable for professional riders or racers.

  • Item NO.:

  • Payment:

    Paypal, Bank Transfer
  • Product Origin:

  • Color:

    UD/3K (Customized Decal Acceptable)
  • Product weight:

  • Brake:

    Disc Brake
  • Hole Count:

    F-24H / R-24H
  • Standard:

    EN Standard
  • Product Detail



Orn730-44C offers everything you need to ride on any road. They are the lightest carbon gravel wheels on the market, with an internal width of 23 mm, which provides durable and exceptionally smooth rides and is compatible with 28C to 50C tires.

Best carbon gravel wheels in 2021 with DT Swiss 240 ratchet EXP hubs, which can directly transmit power in any riding situation. Pro Racing level, lightweight, stiff and durable, very suitable for your gravel and cross-country bikes. If your frame has enough space, these wheels can allow you to drive on rough terrain.


- Hookless tubeless design provides secure performance when ridden at lower tire pressures

- Internal width 23mm rim profile creates a better tire interface to be fast on or off the road

- Aerodynamic advantage

- Gravel/cyclocross carbon wheels

- Easy of tubeless inflation and best tire bead retention

- High end DT Swiss 240S Straight pull hub

- Sram XDR or Shimano 11S

- High end Sapim CX-Ray spokes


Model Orn730-44C Hub Specifications:
Cross Section

Sectional Drawing
Material T700 & T800 Hub DT Swiss 240 Ratchet EXP 36
Sapim CX Ray
Type Clincher/Hookless Nipples
Sapim Self-Locking
Tubeless Ready Driver Body
Shimano 11S or Sram XDR
Internal/External Width 23mm/28mm Brake System
Disc Brake Center Lock
Depth 44mm Front Thru Axle
12 x 100mm
ERD 557 Rear Thru Axle
12 x 142mm
Weight 410+/-15g Hole Count
F-24H / R-24H
Weight Limit 130kg

Spoke Tension 115 ~ 130kgf

Max Tire Pressure (with 25C) 70psi / 4.83bar

Tire Recommended 28C ~ 50C


1. Advantages of Hookless Sidewalls

The bead of the hookless rim is straighter and smoother, and the tire can fully contact the rim wall. Compared with traditional hook rims, it is more durable and impact resistant. Provide more support during sharp turns.

2. Ultra Smooth Inner Wall

Use specific, thinner, high-pressure air bladders to control the inner wall smoothness, The result is that we could see a very clean and smooth inner wall, which means the carbon fabrics are stretched smoothly and optimized. This could ensure the best strength of the fabrics.

3. Burp Free Technology  

When the tire is mounted, the raised portion reinforces the tire bead, making it harder to burp into the center channel.

4. Double Wall Design and Aero Technology

We use a double wall design to better control the rim strength and stiffness during layup. Rim profiles are specially designed with aero gains and drag reduction in mind.

5. Customized Spoke Hole Angle Drilling Technology

High-speed CNC machine tools drill carbon fiber rim spoke holes. Customized according to the geometric angle of the hub. Check all drill holes to make sure they are free of burrs.


Our carbon fiber rims are formed in one piece, and each rim is made of long carbon fiber without wrinkles, to make the strength of the rim is the strongest. Every component, including the rim serial number, airbag, and carbon fiber prepreg, is collected, inspected, and weighed to confirm that everything has been taken into account.

Read more about carbon rim manufacturing process: link here


In the production process of each carbon fiber rim product, Ornanbike strictly conducts 100% quality inspection and records it in the database. Each carbon fiber rim has a unique ID number, which allows us to provide the highest quality products and track each rim To ensure the best after-sales service.

Read more about carbon rim quality control: link here


Coverage: 2-year warranty from the date of purchase.


1. The Standard Warranty program is not transferable and only applies to the initial purchaser. Valid proof of purchase, pictures of the defect, video, and the product serial number is required for a warranty claim.

2. If any manufacturing defect occurs within 90 days of the date of being received, Ornan Bike is obligated to replace the carbon rim and pay for the shipping cost. If any manufacturing defect occurs after 91 days and up to 2 years, Ornan Bike is obligated to replace the carbon rim, and the customer is responsible for the shipping costs.

3. Any problem found on the warranty replacement product should be claimed within 7 days after the replacement is received, otherwise, the replacement is viewed as settled. The warranty period applies to the original purchase date and does not reset with a replacement rim.

Warranty coverage does not cover:

1. Normal wear and tear (spokes, nipples, rim tape, decals, stickers, etc).

2. Improper assembly or maintenance, including maintenance by an unauthorized technician.

3. Damage or failures caused by a crash, accidental damage, misuse of the product, non-compliance with manufacturer specifications of usage, or any other fractious reasons.


Please thoroughly inspect the package before signing.

1. If there is no damage, sign for the product. If there is damage, report this on the delivery slip or, alternatively, refuse the shipment and it will be returned to Ornan Bike. If a claim is made against the shipping company, they will provide a compensation number. Please inform Ornan Bike of this number for delivery tracking. Arrangements for reshipment will be made within 10~15 business days upon receiving the returned item.

2. If the items are damaged but accepted and not reported, there is no recourse against the delivery company and you are responsible for purchasing any replacement product.

3. If the package is in good condition, but the product is significantly damaged in transit, please keep the waybill, packaging and the shipment gets lost in transit, please get in touch with us (info@ornanbike.com) immediately and all Ornan Bike packages have been covered by insurance.



Our carbon wheels are precise hand built.

Then trued by Holland Mechanics Pro Truer.

The perfect allocation of spoke tension in every spoke 

relatively high spoke tension give many advantages:

- High radial, lateral and torsional stiffness.

- Less spoke tension loss over time.

- Longer durability.

- Less maintenance needed.

Wheel roundness tolerance: ≤0.3mm

Wheel lateral tolerance: ≤0.3mm

Wheel center tolerance: ≤0.3mm

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