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The Shimano Deore XT RD-M8200-GS 12-Speed Rear Derailleur combines fast, precise mechanical shifting with a compact, trail-ready design. Developed for Shimano’s 9–45T HYPERGLIDE+ cassette, the medium-cage configuration delivers an impressive 500% gear range while improving ground clearance for technical terrain.

Compared with a traditional long-cage derailleur, the compact GS design provides an additional 23mm of clearance beneath the bike. This reduces the derailleur’s exposure to rocks, roots and trail obstacles, making it an excellent choice for cross-country racing, aggressive trail riding and riders seeking a lighter, more compact drivetrain.

Shimano’s evolved SHADOW ES architecture features a slimmer profile and wide-link construction for increased strength and durability. Its wedge-shaped body is designed to move away from trail impacts, helping the derailleur absorb knocks rather than taking the full force of a strike.

A redesigned cage, solid pulley and shielded pulley teeth help prevent stones, sticks and other trail debris from becoming lodged in the mechanism. Combined with Shimano HYPERGLIDE+ drivetrain technology, the RD-M8200-GS provides quick, controlled shifting across the cassette, including during hard pedalling efforts and steep climbs.

The Shimano Deore XT RD-M8200-GS is ideal for riders building a high-performance 1x12-speed mechanical drivetrain around Shimano’s compact 9–45T cassette. It offers the wide gearing needed for demanding mountain biking without the added length and reduced clearance of a conventional wide-range derailleur.

Key Features

  • Deore XT mechanical 12-speed rear derailleur
  • Medium GS cage configuration
  • Designed for Shimano 9–45T HYPERGLIDE+ 12-speed cassettes
  • Wide 500% gearing range
  • Approximately 23mm more ground clearance
  • SHADOW ES low-profile architecture
  • Wide-link construction for improved strength and durability
  • Wedge-shaped body designed to move away from trail impacts
  • Covered cage and shielded pulley teeth
  • Solid pulley helps resist trail-debris interference
  • Fast, controlled shifting under pedalling load
  • Designed for 1x12-speed mountain bike drivetrains

Compatibility Note

The RD-M8200-GS is specifically designed for compatible Shimano mechanical 12-speed MTB drivetrains using a 9–45T HYPERGLIDE+ cassette. It is not the appropriate derailleur for Shimano 10–51T cassette configurations. Confirm shifter, cassette, chain and freehub compatibility before installation.

SKU IRDM8200GS
Barcode # 4550170319809
Brand Shimano
Shipping Weight 0.5600kg
Shipping Width 0.190m
Shipping Height 0.095m
Shipping Length 0.150m
Shipping Cubic 0.002707500m3

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