The new, even more efficient Shimano M8100 derailleur
In recent years, the popularity of cycling has exceeded all expectations. Athletes and trail builders constantly push the limits of components and equipment today. This does not intimidate the beloved Japanese company in any way; on the contrary, it is the main driving force behind evolution and quality improvement.

To meet the needs of cyclists at all levels, Shimano "breaks" into the market with the new, unbeatable 12-speed Deore XT M8100 group in terms of "quality/price" ratio. The components have undergone some fundamental changes. Thus, the RD-M8100 derailleur features new 13-tooth pulleys that optimally manage chain tension, a rubber bumper on the lower part that protects the construction, offering quiet operation on rough terrain, and incorporates the Shadow RD+ clutch for uninterrupted descents.

Features

• Fast and precise shifting performance, optimized for any trail.
• Quiet transmission in all gear positions.
• Stable transmission on rough terrain.
• Low-profile design.
• 12-speed Wide-Range transmission with the 10-51T combination.
• Reduced derailleur and chain tension in low gears.
• New bumper on the cage.
• Larger 13T pulley.
• Chain compatibility: HG 12-speed.
• Link bushings coated in Fluoro, combining heat resistance with non-stick properties and a low friction coefficient.

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.
• Speeds: 12.
• Clutch: Shimano Shadow RD+.
• Total capacity: 41T
• Actual weight: 281 g.

Medium Cage GS

• Compatible chain: HG 12-speed
• Total capacity: 35T
• 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 transmission. The derailleur stabilizer reduces noise and offers a simple solution to prevent chain drop. Lighter and more efficient than chain guide rollers.