The Shimano FD-6700 [paid link] front derailleur, part of the Ultegra 6700 series, is known for its precision shifting and durability. However, its performance depends heavily on correct installation. Riders often debate whether to tackle the installation themselves or leave it to a professional mechanic. This guide examines both options in detail, offering clear insights into the process, the challenges, and the advantages of each approach.
Understanding the Shimano FD-6700 Front Derailleur
The FD-6700 [paid link] was designed specifically for 10-speed road drivetrains. Its wide link design enhances stiffness, reducing flex under load and improving front shifting accuracy. The derailleur is compatible with double chainring configurations and works best when paired with other Ultegra 6700 series components. Because of its specific geometry and cable routing, proper setup is critical to achieving smooth, reliable shifting.
Tools Required
- 5 mm hex wrench
- Torque wrench [paid link] (with Nm scale)
- Cable cutters
- Phillips screwdriver
- Bike stand [paid link] (recommended for stability)
- Chain checker (optional for drivetrain health)
DIY Installation of the FD-6700 Front Derailleur
For riders with mechanical aptitude and patience, installing the FD-6700 [paid link] at home is possible. The process requires attention to detail and a methodical approach.
First, the derailleur must be mounted at the correct height. The outer cage plate should sit 1–3 mm above the tallest chainring tooth. Misalignment here is one of the most common causes of poor shifting. Next, the derailleur body must be rotated so that the cage runs parallel to the chainrings. Even a small angle error can lead to chain rub or sluggish movement between rings.
Cable tension is the most delicate part of the setup. The FD-6700 uses a bottom-pull or dual-pull cable routing, depending on the frame. Correct tension ensures the derailleur moves quickly and without hesitation. Once the cable is secured, the limit screws must be adjusted carefully. The low limit screw prevents the chain from dropping off the small chainring, while the high limit screw keeps it from overshooting the large chainring.
DIY installation allows riders to learn more about their bikes and make quick adjustments in the future. However, it demands patience and accuracy. Small mistakes, such as over-tightened limit screws or misaligned cage positioning, can result in noisy shifting, chain drops, or premature wear on the drivetrain.
Professional Installation of the FD-6700
A professional mechanic brings experience and precision tools to the installation process. Most shops use calibrated torque wrenches to ensure bolts are tightened to Shimano’s specifications, preventing both slippage and frame damage. Mechanics also have the benefit of repetition; they have installed countless FD-6700 derailleurs and can recognize alignment issues instantly.
One key advantage of professional setup is drivetrain integration. A mechanic will not only mount the derailleur but also check the chainline, bottom bracket spacing, and cable routing. These checks ensure that the derailleur works optimally with the crankset, shifters, and chain. Furthermore, professionals can fine-tune shifting under load—something that is difficult to replicate in a home environment without a proper work stand and test ride.
The additional cost of professional service pays off in reliability. Riders who race, train heavily, or rely on consistent performance may find this option worthwhile.
Cost and Time Considerations
DIY installation is cost-effective since it eliminates labor fees. Most riders already own the basic tools, though investing in a torque wrench [paid link] may be necessary. The trade-off is time. A careful first-time setup may take over an hour, while a mechanic can typically complete the job in under 30 minutes.
Professional installation costs vary depending on location but generally fall between the price of a standard derailleur adjustment and a full drivetrain tune-up. The benefit is peace of mind and guaranteed performance, particularly for riders less confident in their mechanical skills.
Which Option Is Right for You?
Choosing between DIY and professional installation depends on the rider’s priorities. A mechanically inclined cyclist who enjoys working on their bike and has the patience to follow specifications closely may find DIY installation rewarding. However, those who value precision, reliability, and time efficiency will likely prefer professional setup.
Ultimately, the Shimano FD-6700 is a precise component that performs at its best when installed with care. Whether that care comes from your own hands or those of a skilled mechanic determines the best installation choice for you.