Engineered for lightning-fast, ultra-precise 12-speed shifting, the Shimano XTR RD-M9100 Rear Derailleur delivers unwavering performance and chain security for aggressive mountain biking.

The Shimano XTR RD-M9100 Rear Derailleur stands as the heart of Shimano’s flagship mountain bike drivetrain, meticulously designed for the demands of cross-country, trail, and enduro riding. This XTR 12-speed mechanical derailleur provides instantaneous and incredibly accurate gear changes, ensuring flawless power transfer and optimal chain management across wide-range cassettes. Its robust construction and integrated Shadow RD+ chain stabilizer (clutch) deliver exceptional durability and virtually eliminate chain slap, maintaining unwavering reliability in the most challenging conditions. The RD-M9100 is the definitive choice for riders demanding uncompromising speed, precision, and silent operation from their drivetrain.

• 12-speed specific design optimized for modern mountain bike drivetrains.
• Integrated Shadow RD+ chain stabilizer (clutch) for superior chain retention and silent operation.
• Delivers instantaneous and ultra-precise mechanical gear changes.
• Robust and durable construction built to withstand aggressive off-road conditions.
• Optimized for wide-range mountain bike cassettes.