Mechanical rear derailleur with a long SGS cage, designed for 1x12-speed systems and 10–51T cassettes.
- Optimized mechanical shifting: precise cable-actuated shifting with a short lever stroke and ergonomic design
- Low-profile SHIMANO SHADOW ES construction reduces the derailleur’s forward-facing area and contact with rocks and roots
- Robust construction: a wide, firmly supported pivot and large pulleys help limit dirt ingress and increase durability
- Chain stabilization: the dual-spring system creates greater chain tension, helping guide and retain the chain
- Variants with a long (SGS) or medium (GS) cage for 12-speed HYPERGLIDE+ systems
- Robust construction with a slim chain stabilizer
- Robust pulley construction
- Fast, precise shifting under load
- Long SGS cage for 12-speed cassettes with 10–51T sprockets
- Mounting: direct mount (conventional)
- Gear range: 1x12 (10–51T cassette)
- Largest sprocket (max./min.): 51T / 51T (SGS)
- Smallest sprocket (max./min.): 10T / 10T (SGS)
- Cage: SGS (long)
- Material: aluminium, stainless steel, steel, PA-GF
Compatible shifters (R/IR):
- SL-M9100
- SL-M8200
- SL-M8210
- SL-M8100
- SL-M7100
- SL-M6200
- SL-M6210
- SL-M6100
Compatible cassettes:
- CS-M9200
- CS-M9101
- CS-M9100
- CS-M8200
- CS-M8100
- CS-M7200
- CS-M7100
- CS-M6200
- CS-M6100
Compatible chains:
- CN-M9100
- CN-M8100
- CN-M7100
- CN-M6100
Technologies
SHADOW ES – low-profile construction reduces the rear derailleur’s forward-facing surface and eliminates protruding edges that could catch on rocks or roots.
HYPERGLIDE+ – a cassette and chain system for mountain bike drivetrains, designed for fast, efficient and smooth shifting across varied terrain. The system selects the optimal shift timing and helps adapt to rapidly changing terrain. According to Shimano, shifting time is reduced by one third compared with the previous HG system.