The Shimano Alivio M3100 9-speed Rear Derailleur offers crisp performance on- and off-road for 9-speed drive trains.

Key Features:

• Shadow design with 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