R9 RD-R43M (9/10 SP) MEDIUM CAGE - Rear derailleur. - Road bikes. - Model No.: RD-R43M. - Cassette Compatibility: 10 / 9 Speed. - Cage Type: Medium Cage. - Front Chain ring: Double. - Max. Sprocket: 34T. - Min. Sprocket: 11T. - Total Capacity: 39T. - Guide Pulley: Engineering Composite with Steel Bushing. - Tension Pulley: Engineering Composite with Steel Bushing. - Bracket Body: Aluminum / Black. - Bracket Pivot Seal: No. - Plate Body: Composite / Black. - Plate Pivot Seal: No. - Outer Link: Aluminum / Black. - Inner Link: Black Painted Steel. - Outer Plate: Black Painted Steel. - Inner Plate: Black Painted Steel. - Weight: 291g. - Compatibility: Shimano 9/10 Speed Road Rear Derailleur Compatible.