Rear Derailleur Shimano XT RD-M8100 SGS 12-speed

Rear Derailleur Shimano XT RD-M8100 SGS 12-speed

The Shimano XT RD-M8100 SGS is a high-end 12-speed mountain bike rear derailleur featuring an aggressive angled design and an anodized aluminum finish. It is equipped with larger 13-tooth pulleys and Shimano’s proven SHIMANO SHADOW RD+ low-profile technology for fast and precise shifting on technical trails.

The RD-M8100 SGS version is designed for 1x drivetrains and is compatible with 10–51T 12-speed cassettes. Shadow RD+ clutch technology reduces chain slap and improves drivetrain stability on rough terrain, while the optimized design lowers chain tension in low gears.

For nearly three decades, DEORE XT has set the benchmark for mountain bikers worldwide, defined by durability, reliability and performance. The RD-M8100 continues this legacy with a quiet and stable drivetrain performance in every gear.

• Rear speeds: 12
• Cage type: SGS (long cage)
• Technology: SHADOW RD+
• Compatible cassette: 10–51T
• Compatible chain: HG 12-speed
• Pulleys: 13T
• Total capacity: 41T
• Max sprocket: 51T
• Min sprocket: 10T
• Weight: approx. 284 g