Shimano Ultegra RD-6700-A Rear Derailleur

This set is specifically engineered for the Ultegra RD-6700-A model. While some Shimano pulleys share dimensions, we recommend sticking to this specific part number to ensure the exact fit and shifting performance Shimano intended for this derailleur.

You should inspect your pulleys if you notice sluggish shifting, excessive noise from the drivetrain, or if the teeth on the pulley wheels look sharp and pointed rather than flat-topped. If the pulleys have significant side-to-side play or the bearings feel gritty when spun, it is time for a replacement.

Yes, this is a complete set that includes both the upper guide pulley and the lower tension pulley required to service your RD-6700-A rear derailleur.

You will need a standard 3mm or 4mm Allen key, depending on your specific derailleur cage bolts, to remove the old pulleys and install the new ones. It is a straightforward process, but be careful not to lose the small spacers or washers that sit on either side of the pulleys during disassembly.

If your current pulleys are worn, replacing them can certainly improve shifting accuracy and reduce friction. However, if your shifting issues persist after installation, you may also need to check your derailleur hanger alignment or replace your shift cables and housing.