The Campagnolo Bora Ultra 35 [paid link] is a high-performance carbon wheelset known for its aerodynamic efficiency, lightweight construction, and excellent handling. Designed for road cyclists who demand speed and responsiveness, this wheelset offers a balance between climbing ability and aerodynamic performance.
In this guide, we’ll cover installation, adjustment, and maintenance to help you get the best performance from your Bora Ultra 35 [paid link] wheels. You’ll also learn how to troubleshoot common setup issues and ensure long-term durability.
Tools Required
Before installing or maintaining your Bora Ultra 35 [paid link], gather the following tools:
- Cassette lockring tool [paid link]
- Torque wrench [paid link]
- Tire levers
- Track pump with a pressure gauge
- Campagnolo-specific spoke wrench
- Carbon-specific brake pads (if using rim brakes)
- 5mm and 6mm Allen keys [paid link]
- Chain whip (for cassette removal)
Step-by-Step Installation Guide
1. Preparing the Wheelset
Before mounting, inspect your Bora Ultra 35 wheels for any visible damage or manufacturing defects. Ensure the freehub body is compatible with your drivetrain (Campagnolo, Shimano, or SRAM).
2. Installing the Cassette
- Place the cassette onto the freehub body, ensuring the sprockets align properly.
- Use a cassette lockring tool [paid link] to secure the cassette, tightening it to the recommended 40Nm torque.
- Check for any unwanted movement by rotating the cassette gently.
3. Mounting the Tires
For optimal performance, use tubular or tubeless-ready tires as recommended by Campagnolo.
- For tubular tires, apply glue to both the rim and tire, allowing it to dry before mounting.
- For clincher/tubeless tires, ensure proper bead seating and inflate gradually.
- Maintain the recommended tire pressure (typically 80-100 psi) for best performance.
4. Attaching the Wheels to the Bike
- Insert the front wheel into the fork dropouts and tighten the quick-release skewer or thru-axle to the specified torque.
- Repeat the process for the rear wheel, ensuring proper engagement with the dropouts.
- Spin the wheels to check for smooth rotation and clearance.
Adjusting the Bora Ultra 35 for Optimal Performance
1. Brake Pad Alignment
If using rim brakes, install carbon-specific brake pads and ensure they make full contact with the braking surface.
- Adjust the calipers so the pads are 1-2mm away from the rim.
- Ensure equal braking force by fine-tuning cable tension or hydraulic settings.
2. Checking Hub Bearing Play
Campagnolo uses CULT (Ceramic Ultimate Level [paid link] Technology) bearings, which require proper preload adjustment.
- If there is lateral play, use a 5mm Allen key to adjust the preload.
- Ensure the bearings rotate smoothly without excessive tightness.
3. Spoke Tension and Wheel Trueness
The Bora Ultra 35 features a G3 spoke pattern for better power transfer. Periodically check for spoke tension:
- If the wheel wobbles, use a Campagnolo-specific spoke wrench to adjust the tension.
- Always maintain even spoke tension to prevent unnecessary stress on the rim.
Routine Maintenance for Longevity
1. Cleaning and Lubrication
- Wipe the rims with isopropyl alcohol to remove brake residue.
- Use a mild detergent and water to clean the hub and spokes.
- Apply light grease to the freehub body before reassembling.
2. Hub and Freehub Service
To maintain smooth performance, service the CULT bearings every 5,000-10,000 km:
- Remove the axle and freehub body using a 5mm Allen key.
- Clean the bearings and apply ceramic-specific oil (do not use heavy grease).
- Reassemble, ensuring the bearing preload is correct.
3. Brake Track Inspection
If using rim brakes, inspect the braking surface for wear:
- Replace the wheel if the brake track is excessively worn.
- Ensure the carbon surface is not delaminating.
Troubleshooting Common Bora Ultra 35 Issues
1. Unstable or Wobbly Ride
- Check for loose spokes and adjust tension evenly.
- Inspect tire seating and ensure it is correctly mounted.
2. Freehub Noise or Rough Spinning
- Clean and lubricate the freehub mechanism with lightweight oil.
3. Poor Braking Performance
- Ensure brake pads are clean and correctly aligned.
- Replace pads if they are excessively worn.
Bora Ultra 35 vs. Similar Wheelsets
| Feature | Campagnolo Bora Ultra 35 | Zipp 303 Firecrest [paid link] | Shimano Dura-Ace C36 |
|---|---|---|---|
| Rim Material | Full Carbon | Full Carbon | Full Carbon |
| Weight | ~1,360g | ~1,500g | ~1,350g |
| Braking System | Rim & Disc Options | Disc Only | Disc Only |
| Bearing Type | CULT Ceramic | Steel Bearings | Steel Bearings |
| Best For | Climbing & Aerodynamics | All-Rounder | Climbing & Speed |
Final Thoughts
The Campagnolo Bora Ultra 35 is a premium wheelset designed for speed, responsiveness, and efficiency. Proper installation and maintenance will ensure optimal performance and longevity. Regular servicing of the hub bearings, brake track, and spoke tension will prevent premature wear.