M-series rear derailleurs are designed to work with 8 and 9-speed Shimano-compatible mountain and road shifters. These Mezzo rear derailleurs are light, robust, and reliable. You can count on them to get any bike on the road.

• Weight saving aluminum bracket body and outer link
• Steel pulley cage for extra chain-rub durability
• Compatible with Shimano 8 and 9-speed mountain and road systems
• Rear Derailleur Mount Type: 10×1 Standard
• Rear Der/Shifter Compatibility: Shimano Mountain
• Cage Length: Long
• Drivetrain Speeds: 8
• Drivetrain Speeds: 9
• Weight: 306
• Color: Black
• Chain Wrap Capacity (teeth): 45
• Largest Cog: 36