RD-M8100 DEORE XT REAR DERAILLEUR (1x12)

Product Information

The Shimano DEORE XT RD-M8100-SGS rear derailleur brings a new level of trail performance to your 1x12 mountain bike drivetrain. It’s engineered for silent, precise shifting and exceptional chain management, making it an ideal choice for aggressive trail and enduro riding. With innovations from the higher-end XTR series, this derailleur offers consistent, shockless shifts even under load.

Featuring SHADOW RD+ technology and a new bumper on the pulley cage, this derailleur significantly reduces chain slap and noise on rough terrain. Its larger 13-tooth pulleys, equipped with sealed bearings, not only increase efficiency but also provide superior chain retention. Designed for wide-range 12-speed cassettes up to 10-51T, it ensures a stable and reliable ride across varied conditions.

Features

• SHADOW RD+ technology for reduced chain slap and a quieter drivetrain
• New bumper on pulley cage for increased impact absorption and stability
• HYPERGLIDE+ for fast, precise, and shockless shifting performance
• Large 13-tooth guide and tension pulleys with sealed bearings for efficiency and chain management
• Optimized for 1x12-speed drivetrains with wide-range cassette compatibility (up to 51T)

Specs

• Model: RD-M8100-SGS
• Rear Speeds: 12
• Compatible Chain: HG 12-speed
• Max Low Sprocket: 51T
• Total Capacity: 41T
• Pulley Teeth: 13T
• Weight: 284g
• Cage Length: Long (SGS)
• Material: Aluminum, Glass Fiber Reinforced Polymer (GFRP)