SHIMANO ALTUS - Rear Derailleur - 9-speed The 9-speed SHIMANO ALTUS M370 rear derailleur use its MEGA 9 DRIVE TRAIN design to deliver smooth, light action shifting performance. FEATURES - Possible to select appropriate gear combination for stress free long riding - MEGA 9 DRIVE TRAIN - Smooth / light action shifting performance - Low profile concept with Double Servo-panta technology - Wide Link for durability and precise shifting - Total capacity: 45T - Color options: Black, Silver PRODUCT SPECIFICATIONS - MODEL NO RD-M370-SGS - SERIES ALTUS M370 Series - Color Black | Silver - Compatible chain HG 9-speed - Total capacity 45T - Cable adjuster - Mount_Direct attachment (Conventional) - Low sprocket_Max. 34T - Low sprocket_Min. 28T - Max. front difference 22T - Pulley_Sunken type pulley bolt X (Guide pulley) - (Tension pulley) - Pulley_Teeth 11/11T - Pulley cage SGS - Top-Normal spring type_Double servo - Top sprocket_Max. 11T - Top sprocket_Min. 11T - Rear speeds 9