The Campagnolo Ekar 13-speed groupset, renowned for its precision and reliability, has become a popular choice among gravel cyclists. With the introduction of the Ekar GT variant, offering a broader gear range and other modifications, many riders are considering potential upgrades.

This article delves into the compatibility between the original Ekar and the Ekar GT components, providing insights and best practices for those contemplating an upgrade.

Understanding the Ekar and Ekar GT Differences

The original Ekar groupset was designed to meet the demands of gravel cycling, featuring a 13-speed drivetrain with cassette options up to 10-44T. The Ekar GT, introduced later, offers a wider gear range, notably with a 10-48T cassette, and includes design modifications aimed at enhancing performance and accessibility.

Compatibility Considerations

Rear Derailleur and Cassette:

The Ekar GT rear derailleur is engineered to accommodate the 10-48T cassette, thanks to its modified geometry and increased capacity. In contrast, the original Ekar derailleur was optimized for cassettes up to 10-44T. Attempting to use a 10-48T cassette with the original Ekar derailleur may lead to suboptimal performance, including inadequate chain tension and shifting inaccuracies. As noted by a Campagnolo technical expert, while some riders have experimented with this setup, it is not officially recommended due to potential compatibility issues.

Crankset and Chainring:

The Ekar GT introduces a smaller 36T chainring option, achieved by altering the bolt circle diameter (BCD) on the crankset. This means that to utilize the 36T chainring, one would need to adopt the Ekar GT crankset, as the original Ekar crankset’s BCD does not support this size. Therefore, upgrading to a 36T chainring necessitates replacing the entire crankset with the Ekar GT version.

Shifters and Other Components:

The shifters from the original Ekar groupset are compatible with the Ekar GT rear derailleur. This cross-compatibility allows riders to upgrade specific components without overhauling the entire system. Additionally, components such as rotors, disc brake calipers, bottom bracket cups, and chains are interchangeable between Ekar and Ekar GT, facilitating a modular approach to upgrading.​

Best Practices for Upgrading

1. Assess Your Riding Needs: Determine whether the expanded gear range of the Ekar GT aligns with your cycling requirements. If you frequently encounter steep terrains or require lower gearing, the Ekar GT’s 10-48T cassette may offer significant benefits.
2. Component Compatibility: Ensure that any components you plan to upgrade are compatible with your existing setup. For instance, pairing the Ekar GT rear derailleur with the original shifters is feasible, but integrating the 10-48T cassette would also necessitate the Ekar GT derailleur.
3. Consult Official Resources: Refer to Campagnolo’s official documentation and compatibility charts to verify component interoperability. This step is crucial to avoid potential issues arising from incompatible parts.
4. Professional Installation: Consider seeking assistance from a professional bike mechanic when performing upgrades. Expert installation ensures optimal performance and safety, particularly when dealing with intricate components like derailleurs and cranksets.

Conclusion

Upgrading your Campagnolo Ekar 13-speed rear derailleur to incorporate Ekar GT components is achievable with careful planning and consideration of compatibility factors. By understanding the distinctions between the original Ekar and Ekar GT, and adhering to best practices, you can enhance your bike’s performance to better suit your cycling endeavors.​

FAQs

1. Can I use the Ekar GT 10-48T cassette with my original Ekar rear derailleur? While some riders have attempted this setup, it is not officially recommended due to potential compatibility issues and suboptimal performance.
2. Is the Ekar GT crankset compatible with the original Ekar groupset? Yes, the Ekar GT crankset can be used with the original Ekar groupset. However, note that the BCD differs, affecting chainring compatibility.
3. Are the shifters from the original Ekar compatible with the Ekar GT rear derailleur? Yes, the original Ekar shifters are compatible with the Ekar GT rear derailleur.
4. Do I need to replace my chain when upgrading to the Ekar GT derailleur and cassette? It is advisable to use the Campagnolo Ekar 13-speed chain to ensure optimal compatibility and performance.
5. Can I mix components from Ekar and Ekar GT without issues? Certain components, such as shifters and brake calipers, are cross-compatible. However, always consult official compatibility charts and consider professional installation when mixing components.
6. What are the benefits of upgrading to the Ekar GT groupset? The Ekar GT offers a wider gear range, improved ergonomics, and cost benefits, enhancing versatility and performance for gravel cycling.