Shimano GRX RD-RX810 Pulley Set

No, this specific pulley set is designed exclusively for the RD-RX810 rear derailleur. While they may look similar, internal dimensions and tooth profiles vary across the GRX lineup, so you should check your specific derailleur model number before purchasing.

You should replace them if the teeth on the pulleys look sharp or pointed, rather than flat-topped, or if you notice excessive side-to-side play in the wheels. If your shifting feels sloppy or the drivetrain has become noticeably noisier, worn pulleys are often the culprit.

Yes, this is a complete set that includes both the guide pulley (the upper one) and the tension pulley (the lower one). It is best practice to replace both at the same time to ensure consistent wear and optimal shifting performance.

This is a straightforward maintenance task that most home mechanics can handle with a basic set of Allen keys. You simply need to remove the mounting bolts, swap the old pulleys for the new ones, and ensure the pulleys are oriented correctly according to the directional arrows.

Yes, these pulleys are specifically engineered for the 11-speed Shimano GRX RD-RX810 drivetrain. They are optimized to work seamlessly with the corresponding 11-speed chain width for precise shifting.