This RD-M4000 Alivio, 9-speed compatible Shadow design rear derailleur SGS is great value and offers crisp performance on- and off-road for 9-speed drivetrains. This Shadow Design Derailleur with a smooth skid plate surface features a super low profile design that reduces the risk of damage from trail side hazards.
- Wide link design increases rigidity and service life
- Alloy body and outer link leads to lower weight without compromising strength and durability
- 11-tooth pulleys for reduced pulley wear and chain noise
- Advanced light action design with low friction fluorine coated link pivot bushings
- For use with 32 to 36 tooth low rear sprockets, total capacity 45 teeth
- Top-normal swing design
- Compatible with 9-speed Hyperglide sprockets