Working in conjunction with Shimano's HG-X 10-Speed chain which provides a low weight and superb motion from link to link, this derailleur has an effective Side Swing action which follows the direction of the chain for unrivalled cable routing. The M617 E-Type is a fast and efficient mech for switching between your inner and outer chainrings. 

Top Features:

• Material: Clamp: Aluminium; Plate: Steel
• Compatible Chain: HG-X 10-Speed
• Top Gear Teeth: 36-38T
• Total Gear Capacity: 14T
• Drivetrain Speed: 10-Speed
• Action: Side Swing
• Cable Route Type: Front-Pull