Shimano XT RD-M8100 12-Speed Derailleur

The new, even more efficient Shimano M8100 rear derailleur
In recent years, the popularity of cycling has exceeded all expectations. Athletes and trail builders constantly push the limits of today's components and equipment. This does not intimidate the much-loved Japanese manufacturer in any way; rather, it is the main driving force behind its development and improvements in quality.

To meet the needs of cyclists at every level, Shimano bursts onto the market with the new Deore XT M8100 12-speed groupset, unbeatable in terms of value for money. The components have undergone some fundamental changes. The RD-M8100 rear derailleur features new 13-tooth pulleys that manage chain tension optimally, a rubber bumper on the lower section that protects the structure and provides quiet operation on rough terrain, and retains the Shadow RD+ clutch for descents without unwelcome interruptions.

Features

• Fast, precise shifting performance, optimised for any trail.
• Quiet drivetrain in all gears.
• Stable drivetrain on rough terrain.
• Low-profile design.
• Wide-range 12-speed drivetrain with the 10-51D combination.
• Reduced rear derailleur and chain tension in low gears.
• New bumper on the cage.
• Larger 13D pulley.
• Chain compatibility: HG 12-speed.
• Fluorine-coated linkage bushings combine heat resistance with non-stick properties and a low coefficient of friction.

Long cage SGS

• Largest sprocket (maximum): 51 teeth.
• Largest sprocket (minimum): 45 teeth.
• Smallest sprocket (maximum): 10 teeth.
• Smallest sprocket (minimum): 10 teeth.
• Bearings: sealed.
• Speed: 12.
• Clutch: Shimano Shadow RD+.
• Total capacity: 41D
• Actual weight: 281 g.

Medium cage GS

• Compatible chain: HG 12-speed
• Total capacity: 35D
• Sealed bearing
• Sprockets: 12
• Largest sprocket (maximum): 45 teeth
• Largest sprocket (minimum): 45 teeth
• Smallest sprocket (maximum): 10 teeth.
• Smallest sprocket (minimum): 10 teeth.
• Actual weight: 286 g

Technology

Shimano Shadow RD+
Fewer distractions for a quiet drivetrain. The rear derailleur stabiliser reduces noise and provides a simple solution to prevent chain drop. Lighter and more efficient than chain guide rollers.