Shimano XT RD-M8100 12sp Long Cage Rear Derailleur Shadow+

Product details

Shimano Deore XT M8100 12-Speed Long Cage Rear Derailleur

Take your 12-speed mountain bike drivetrain to the next level with the Deore XT M8100 rear derailleur. Designed for fast, smooth, and silent shifting, this derailleur is engineered to handle the most demanding trails while giving you maximum gear range and precise chain control.

Why it stands out:

• Maximum 12-speed range: Compatible with Shimano’s new 12-speed cassettes, including wide 10–51T sprockets.
• Smooth and quiet: Decreased chain tension in low gears and a bumper on the pulley cage reduce noise and improve stability on rough terrain.
• Efficient chain management: Large 13T pulleys keep your chain running smoothly, increasing drivetrain efficiency.
• Durable, trail-ready design: Built for demanding mountain biking with a low-profile shape that resists impacts and maintains performance.

Note on design:
The pulley cage may appear bowed or out of shape. This is intentional and optimised by Shimano for peak shifting performance and chain stability.

Key Features:

• Long cage design for wide-range 12-speed drivetrains
• Optimized for 10–51T sprocket combinations
• Reduced chain tension for quieter operation
• Large 13T pulley wheels for improved efficiency
• Added bumper on pulley cage to reduce shock and chain slap
• Smooth, fast, and precise shifting across all gears
• Stable performance on rough and technical terrain

In short: The Deore XT M8100 rear derailleur gives you maximum range, quiet operation, and precise performance—the perfect choice for aggressive riders who demand reliability and efficiency on every ride.