Can You Upgrade Your Shimano FD-4700 Front Derailleur? Compatibility and Best Practices

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The Shimano FD-4700 [paid link] front derailleur belongs to the Tiagra 4700 groupset, which introduced several design changes compared to earlier Tiagra models. These updates improved shifting performance but also created unique compatibility requirements. Riders often ask whether they can upgrade their FD-4700 [paid link], and the answer depends on a clear understanding of cable pull ratios, chainring sizes, and drivetrain integration. This guide explains everything you need to know about upgrading the Shimano FD-4700 [paid link] front derailleur, including compatibility considerations and best practices for installation.

Understanding the Shimano FD-4700 Design

The FD-4700 front derailleur was designed specifically for the Tiagra 4700 10-speed groupset. Unlike previous 10-speed Tiagra derailleurs, the FD-4700 uses the same cable pull ratio as Shimano’s 11-speed road groupsets. This means that while it is a 10-speed component, its actuation matches that of 11-speed derailleurs such as those from the 5800 (105) and 6800 (Ultegra) series.

This design ensures smoother front shifting, reduced lever effort, and more stable chain control. However, it also restricts compatibility with older 10-speed shifters, making upgrades less straightforward.

Compatibility with Shimano Shifters

One of the most important factors in upgrading the FD-4700 front derailleur is compatibility with shifters.

  • Compatible: Tiagra ST-4700 [paid link] shifters and Shimano 11-speed road shifters (105 ST-5800 [paid link], Ultegra ST-6800 [paid link], and Dura-Ace ST-9000 [paid link]) work with the FD-4700 because they share the same cable pull ratio.
  • Not Compatible: Older 10-speed shifters such as Tiagra ST-4600 [paid link] or 105 ST-5700 [paid link] do not work properly with the FD-4700. Attempting to mix them results in poor shifting and misaligned chain movement.

If you plan to upgrade, you must match the derailleur with the correct shifter type.

Chainring and Crankset Considerations

The FD-4700 supports both standard double and compact double cranksets. It is optimized for:

  • Maximum capacity: 16T difference between large and small chainring.
  • Maximum large chainring size: 52T.

When upgrading, it is crucial to ensure your crankset falls within these specifications. For example, a 50/34 compact crankset or a 52/36 mid-compact crankset will work seamlessly. Attempting to use the derailleur with chainrings outside this range will compromise shifting precision and cause chain rub.

Frame Mounting Standards

The FD-4700 front derailleur is available in both braze-on and clamp-on versions. When upgrading, you must choose the correct type for your frame:

  • Braze-on: Requires a braze-on mount welded to the frame.
  • Clamp-on: Uses a clamp sized for 31.8 mm or 34.9 mm seat tubes, with shims available for smaller diameters.

Always check your frame specification before ordering a replacement or upgrade.

Upgrading from FD-4700 to 11-Speed Models

Some riders consider upgrading from the FD-4700 to an 11-speed front derailleur such as FD-5800 [paid link] (105) or FD-R8000 [paid link] (Ultegra). This is possible because of the shared cable pull ratio. However, a few points must be kept in mind:

  • The derailleur must still be used with compatible 11-speed shifters.
  • The chain and cassette must match the number of speeds in the system.
  • If keeping a 10-speed drivetrain, upgrading to an 11-speed front derailleur provides no performance gain, as both FD-4700 and Shimano’s 11-speed models are mechanically similar.

In short, upgrading to FD-5800 [paid link] or FD-R8000 [paid link] is only beneficial if you are moving to a complete 11-speed groupset.

Common Mistakes When Upgrading

Improper upgrades often lead to poor performance. The most common mistakes include:

  • Pairing FD-4700 with non-compatible 10-speed shifters.
  • Using oversized chainrings beyond 52T.
  • Installing a clamp-on derailleur on a frame designed for braze-on.
  • Mixing 10-speed and 11-speed drivetrains without considering full compatibility.

Avoiding these errors ensures a smooth upgrade and extends the lifespan of your drivetrain.

Best Practices for Upgrading the FD-4700

When upgrading or replacing the FD-4700 front derailleur, follow these best practices:

  • Always pair it with Tiagra ST-4700 [paid link] or 11-speed road shifters.
  • Verify crankset compatibility before installation.
  • Select the correct braze-on or clamp-on version for your frame.
  • Adjust limit screws carefully to prevent chain overshifting.
  • Use a torque wrench [paid link] when securing the derailleur to avoid frame damage.

Proper setup ensures precise, long-lasting performance.

Conclusion

Upgrading the Shimano FD-4700 front derailleur is possible, but it requires careful attention to compatibility. Since the FD-4700 uses the same cable pull ratio as 11-speed Shimano derailleurs, it offers smooth and reliable shifting when paired correctly. However, mixing it with older 10-speed shifters or incompatible cranksets will only result in frustration. For riders planning a full drivetrain upgrade, moving to an 11-speed system with FD-5800 [paid link] or FD-R8000 [paid link] makes sense. For those staying on 10-speed, the FD-4700 remains the best option when matched with the correct components.