How to Replace the Cable on Your Campagnolo Ekar 13s Rear Derailleur for Better Performance

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The Campagnolo Ekar 13-speed groupset is designed for high-performance gravel riding, but even the best drivetrain components need maintenance. Over time, the rear derailleur cable can stretch, fray, or wear out, leading to inconsistent shifting. Replacing the cable on your Campagnolo Ekar 13s [paid link] rear derailleur ensures crisp, accurate gear changes and extends the life of your drivetrain.

In this guide, we’ll cover the entire process, including the tools required, step-by-step instructions, and tips for optimal shifting performance.

Tools Required

To replace the cable on your Ekar 13s [paid link] rear derailleur, you’ll need:

  • 5mm Allen wrench [paid link]
  • Cable cutters
  • Campagnolo-compatible shift cable
  • Torque wrench [paid link] (recommended)
  • Needle-nose pliers
  • Cable crimper (for end cap)
  • Campagnolo cable liner (optional)
  • Chain pliers (if you need to remove the chain for better access)

When to Replace the Rear Derailleur Cable

A worn or damaged cable can cause shifting problems such as:

  • Sluggish shifting – Delayed or unresponsive gear changes.
  • Inconsistent gear changes – Skipping gears or poor alignment.
  • Frayed or rusted cable – Visible damage or stiffness.
  • Excessive cable stretch – The derailleur requires constant readjustment.

If you experience any of these issues, it’s time to replace your rear derailleur cable.

Step-by-Step Guide to Replacing the Cable on Your Campagnolo Ekar 13s Rear Derailleur

1. Shift to the Smallest Cog

Before removing the cable, shift to the smallest (highest gear) cog. This relieves tension on the cable, making it easier to remove.

2. Detach the Old Cable

  • Locate the cable anchor bolt on the Ekar rear derailleur.
  • Use a 5mm Allen wrench [paid link] to loosen the bolt.
  • Pull the cable out from the derailleur.

3. Remove the Old Cable from the Shifter

  • Shift the right-hand lever multiple times until it no longer moves—this fully releases the cable inside the shifter.
  • Locate the cable port on the Campagnolo Ekar shifter and gently push the old cable out.

4. Prepare the New Cable

  • If using a pre-lubricated Campagnolo cable, no additional lubrication is needed.
  • If using a standard stainless steel or polymer-coated cable, lightly lubricate it to ensure smooth movement.

5. Insert the New Cable into the Shifter

  • Slide the new cable into the shifter’s designated entry point.
  • Push it through until it exits near the derailleur.
  • If needed, guide the cable using needle-nose pliers.

6. Route the Cable Through the Frame

  • Follow the original routing path through the frame.
  • If your bike has internal cable routing, use a cable liner or guide tool to ensure easy installation.

7. Secure the Cable at the Rear Derailleur

  • Thread the cable through the derailleur’s anchor point.
  • Pull it taut but do not overtighten.
  • Tighten the cable anchor bolt with a 5mm Allen wrench [paid link] to secure the cable.

8. Adjust Cable Tension and Limit Screws

  • Shift through the gears to check for smooth movement.
  • Use the barrel adjuster to fine-tune tension for precise shifting.
  • Adjust the high and low limit screws if necessary.

9. Trim and Cap the Cable

  • Use cable cutters to trim excess cable, leaving about 2 inches.
  • Crimp an end cap onto the cable to prevent fraying.

10. Final Test and Fine-Tuning

  • Shift through all 13 gears to ensure proper movement.
  • If shifting feels sluggish, make small adjustments with the barrel adjuster.

Troubleshooting Common Issues After Cable Replacement

1. Shifting Feels Off or Sluggish

  • Ensure the cable is properly seated in the shifter and derailleur.
  • Adjust the barrel adjuster in small increments.

2. Chain Skips Gears

  • Check cable tension and readjust if needed.
  • Inspect derailleur hanger alignment.

3. Noise While Shifting

  • Apply a small amount of lubrication to the cable housing.
  • Recheck limit screw settings.

Maintaining Your Campagnolo Ekar 13s Rear Derailleur Cable

To keep your shifting smooth, follow these maintenance tips:

  • Inspect cables regularly for fraying or wear.
  • Lubricate cables if shifting becomes stiff.
  • Replace cables every 6–12 months, depending on riding conditions.

Conclusion

Replacing the cable on your Campagnolo Ekar 13s [paid link] rear derailleur is a simple yet essential maintenance task for smooth and precise shifting. With the right tools and careful adjustments, you can ensure your drivetrain performs at its best.