Microshift R9 R43M Road Rear Derailleur (Black) (9 Speed) (Medium Cage) (Shimano Compatible)

The Microshift R43M Rear Derailleur is designed to work with 9-speed Shimano-compatible shifters as well as 7, 8, and some 10-speed shifters (Shimano Road 10-speed only).

Features:

• Weight saving aluminum bracket body and outer link
• Steel pulley cage for extra chain-rub durability
• Compatible with Shimano Mountain & Road 7, 8, and 9-speed and Shimano Road 10-speed systems
• Not compatible with Shimano Tiagra 4700 road system or GRX-400
• Medium cage for double 34T low gear
• Short cage for double 28T low gear

Specifications:
Speed: 9 Speed
Shifter Compatibility: Shimano Road & Mountain (7, 8, 9 Speed), Shimano Road (10 Speed)
Shift Mechanism: Cable Actuated
Max. Tooth: 28 or 34T
Min. Tooth: 11T
Chain Wrap Capacity: 33 or 39T
Cage Material: Steel
Chain Retention: –
Color: Black
Weight: 291g (Medium Cage)

This product is expected to become available for purchase on Thursday, October 1, 2026