RD-M8100 12-Speed Rear Derailleur Shadow+ GS Medium Cage

The XT Shadow Plus 12-speed rear derailleur offers fast and precise shifting performance, optimized to conquer any trail.

The all-new Shimano Deore XT M8100 series derailleurs elevate drivetrain silence through decreased tension in the low gear position and an added bumper on the pulley cage. Larger 13-tooth pulleys enhance efficiency and chain management, while compatibility with Shimano's new 12-speed cassettes expands the gear range.

Technology: 

Hyperglide+ drivetrain’s redesigned cassette and chain enhance the next generation of MTB riding by improving speed, shifting efficiency, and smoothness over any terrain.

Key Features:

- Improved Chain Engagement: Stronger retention and smoother pedalling provide greater power and confidence over rapidly changing terrain.
- Enhanced Shifting: Definitive up and down shifting in both directions boosts riders’ concentration and acceleration.
- Ultra-Efficient Drivetrain: Smoother power transmission increases comfort and reduces rider stress.
- Wide Gear Range: Offers various cassette options and the choice of a single or double front chainring, supporting diverse MTB riding styles and preferences.
- Continuous Pedaling: Enables riding over virtually any terrain with the revamped drive system and dedicated chain, delivering fast shifting, efficient power transfer, and unmatched chain stability.
- Smooth Operation: Helps riders adapt to drastically changing trail conditions by precisely judging the optimal shifting moment.
- Reduced Pedaling Shock: Cuts shifting times by a third compared to the current HG system, allowing seamless maneuvering over rough trails.

Shimano Shadow RD+
- Less Distraction: Quieter drivetrain with a rear derailleur stabilizer that reduces chain slap.
- Chain Drop Prevention: Simple solution that is lighter and more efficient than roller-type chain devices.
- Advanced Design: Super low profile and optimized slant angle for super light shifting action.
- Chain Stabilizing Switch: Reduces chain bounce in rough terrain, maintaining a more stable drive and shifting.
- Silent Ride: Single tension spring prevents contact with the chainstay, and a rubber bumper on the pulley cage adds to the silent drive.
- Efficient Performance: Features 13-tooth pulleys and decreased derailleur tension to prevent high chain tension in low gears.
- Durable Build: Cold-forged wide alloy links, pivot body, and four fluorine-coated link pin bushings for durability.
- Positive Shifting Feel: Strong return spring enhances the shifting experience.
- Optimized for XT M8100 12-Speed Drivetrains: Durable sealed 13-tooth bearing pulleys reduce friction and are specifically designed for 1x drivetrains.
- Direct Cable Routing: Prevents snagging from trail hazards.
- Specifications: Max low sprocket: 45/51 tooth (1x12-speed), average weight: 284g.

Genuine, brand new, boxed Shimano product - Biketart are an official UK Shimano stockist.