Shimano Derailleur Rear Rdm5100Sgs 1X11Spd 11-51

Shimano Deore RD-M5100-SGS Rear Derailleur – 1x11-Speed

What Is It?

The Shimano Deore RD-M5100-SGS is an 11-speed MTB rear derailleur designed specifically for wide-range 1x11-speed drivetrains. It supports cassettes up to 51T, providing the capacity needed for modern mountain bike gearing and steep climbing.

Key Features

• Designed for 1x11-speed MTB drivetrains
• SGS long cage design
• Compatible with wide-range 11-51T cassettes
• Shimano Shadow RD+ low-profile design
• Integrated chain stabiliser helps reduce chain movement
• Improved chain retention on rough terrain
• Designed for smooth and reliable shifting
• Compatible with Shimano 11-speed MTB shifters

Specifications

• Brand: Shimano
• Series: Deore
• Model: RD-M5100-SGS
• Speeds: 11-speed
• Drivetrain: 1x11
• Cage: SGS / Long Cage
• Maximum Sprocket: 51T
• Application: MTB
• Technology: Shadow RD+ chain stabilisation

Benefits

• Provides reliable shifting across a wide 11-speed cassette
• Supports a 51T largest sprocket for easier climbing
• Chain stabiliser reduces chain slap and unwanted movement
• Low-profile Shadow RD+ design helps protect the derailleur from trail impacts
• Ideal for modern 1x MTB setups without a front derailleur
• Durable construction for demanding trail use

Best Suited For

The Shimano Deore RD-M5100-SGS is best suited for 11-speed mountain bikes using a 1x11 drivetrain, particularly XC and trail bikes equipped with a wide-range 11-51T cassette.