The Shimano Deore XT RD - M781 is a top - notch mountain bike derailleur. It comes with Shimano's Dyna - Sys shifting technology, which significantly enhances shift performance. The Shadow+ stabilisation feature ensures a smooth ride. Its low - profile design is a great advantage as it protects the derailleur from rocks and debris on the trails, giving you worry - free rides. With the Shadow RD+ technology, the Deore XT RD - M781 offers consistent shifting performance on rough terrains. The built - in stabilisers reduce chain slap, making your ride quieter, minimizing drivetrain noise, and reducing wear on drivetrain components. Key features include being part of the Deore XT M780 Series, Shimano Shadow technology for chain stability and less chain slap, reduced drivetrain noise in all gears, and a 10 - speed Dyna - Sys system for consistent shift effort. Specifications: 10 - speed rear derailleur, medium cage, compatible with HG - X 10 - speed chain, low sprocket max 36T, low sprocket min 32T, top sprocket max/min 11T, and total capacity 35T.

Using the Shimano Deore XT RD - M781 is straightforward. Just shift gears as you normally would on your mountain bike. The Dyna - Sys technology will ensure smooth and consistent shifts. When riding, especially on rough trails, the low - profile design will protect the derailleur from getting hit by rocks and debris. As for maintenance, regularly clean the derailleur to remove dirt and grime. Check the chain for proper tension and alignment. Lubricate the moving parts periodically to keep it running smoothly. If you notice any excessive noise or inconsistent shifting, it might be a sign that the derailleur needs adjustment or parts replacement. Make sure to use only the recommended HG - X 10 - speed chain for best performance.