Choosing the right front derailleur is crucial for smooth, reliable shifting and drivetrain performance. The Shimano FD-4700 [paid link] (Tiagra 10-speed) and Shimano FD-5800 [paid link] (105 11-speed) are often compared due to their similarities in design and functionality. However, they have key differences in compatibility, shifting mechanics, and overall performance.
This guide will compare the FD-4700 [paid link] and FD-5800 [paid link], helping you decide which is the better choice for your road bike.
For insights on front derailleur set-up, check:
Shimano FD-4700 Set-Up Quality: Why It Feels Off and How to Fix It
Shimano FD-4700 vs. FD-5800: Quick Comparison
| Feature | Shimano FD-4700 (Tiagra 10-Speed) | Shimano FD-5800 (105 11-Speed) |
|---|---|---|
| Speed Compatibility | 10-speed drivetrains | 11-speed drivetrains |
| Lever Pull Ratio | Road 11-speed lever pull ratio | Road 11-speed lever pull ratio |
| Chainring Size Compatibility | 16T capacity (50-34T, 52-36T) | 16T capacity (50-34T, 52-36T, 53-39T) |
| Shifting Mechanism | Long arm for smoother shifting | Redesigned long arm for enhanced leverage |
| Weight | ~103g | ~95g |
| Clamp/Braze-On Option | Available in both clamp and braze-on | Available in both clamp and braze-on |
| Intended Groupset | Tiagra 4700 | Shimano 105 R7000 |
While both derailleurs feature similar shifting mechanics, the FD-5800 is optimized for 11-speed systems, whereas the FD-4700 is designed for 10-speed drivetrains but uses an 11-speed pull ratio for improved precision.
1. Compatibility Differences
The biggest difference between the FD-4700 and FD-5800 is speed compatibility.
- Shimano FD-4700 is a 10-speed derailleur, but it requires Shimano 11-speed road shifters because it shares the same cable pull ratio as 11-speed road groupsets.
- Shimano FD-5800 is designed for true 11-speed systems, meaning it won’t work with 10-speed shifters due to different indexing.
Which One Should You Choose?
- If you’re using a Tiagra 4700 groupset, you must use FD-4700 because it is the only Tiagra derailleur with 11-speed lever compatibility.
- If you are upgrading to an 11-speed drivetrain, go for the FD-5800 (or its newer equivalent, the Shimano 105 R7000).
For more on drivetrain compatibility, check out:
Shimano FD-4700 Compatibility Secrets: What Works, What Fails, and What to Avoid
2. Shifting Performance: Which One Feels Smoother?
Both the FD-4700 and FD-5800 feature Shimano’s long-arm lever design, which improves shifting leverage for crisper front shifts. However, the FD-5800 has a refined shifting mechanism that requires slightly less effort when moving to the larger chainring.
Key Differences in Shift Quality
- FD-5800 has an updated cage profile, making shifts marginally smoother than FD-4700.
- FD-4700 still provides crisp shifts, but it feels slightly stiffer under load compared to FD-5800.
Verdict: If you prioritize effortless front shifting, the FD-5800 has a slight edge, but the FD-4700 still offers excellent shift precision.
For fine-tuning derailleur shifts, see:
Shimano FD-4700 Limit Screw Adjustments: How to Get Them Just Right
3. Weight and Build Quality
| Feature | FD-4700 | FD-5800 |
|---|---|---|
| Weight | ~103g | ~95g |
| Materials | Aluminum cage, reinforced steel pivots | Lighter alloy cage, refined pivots |
The FD-5800 is slightly lighter than the FD-4700, mainly due to its lighter alloy materials and optimized design. However, the weight difference (~8g) is negligible for most riders.
Verdict: If weight is a top priority, the FD-5800 is marginally lighter, but for most cyclists, this difference won’t be noticeable.
4. Installation & Set-Up Differences
Both derailleurs follow similar installation procedures, but the FD-5800 has slightly improved trim functionality to reduce chain rub.
Installation Notes
- FD-4700 requires the use of an 11-speed shifter, even though it’s a 10-speed derailleur.
- FD-5800 is an 11-speed derailleur and requires an 11-speed compatible drivetrain.
For installation guides, refer to:
How to Install, Adjust, and Maintain the Shimano FD-4700
Which Derailleur Should You Choose?
| Choose FD-4700 If… | Choose FD-5800 If… |
|---|---|
| You have a Shimano Tiagra 4700 groupset and need a 10-speed derailleur with 11-speed pull ratio. | You are running a full 11-speed groupset and want the best shifting performance. |
| You need a budget-friendly front derailleur with reliable performance. | You want a lighter, smoother-shifting derailleur that’s optimized for 11-speed. |
| You don’t plan to upgrade to 11-speed in the near future. | You are considering future upgrades to Shimano R7000 or Ultegra 11-speed. |
Final Verdict:
- If you ride a Tiagra 4700 groupset, FD-4700 is the only compatible choice.
- If you’re on an 11-speed Shimano drivetrain, FD-5800 (or the newer R7000) is the better option due to improved shifting smoothness and weight savings.
Conclusion
Both the Shimano FD-4700 and FD-5800 offer smooth, precise front shifting, but they are optimized for different drivetrains.
- FD-4700 is for 10-speed Tiagra setups that use 11-speed shifters.
- FD-5800 is for 11-speed Shimano 105 setups, offering slightly improved shift feel.
If you’re upgrading from FD-4700, consider the Shimano 105 R7000—the next-generation version of FD-5800 with even better performance.
Would you like to learn more about upgrading from FD-4700 to 11-speed? Let us know in the comments!