Shimano Deore XT RD-M8120-SGS 2x12-Speed Rear Derailleur

The Shimano Deore XT RD-M8120-SGS rear derailleur is designed for mountain bikers with a 2x12-speed drivetrain who want a wide gear range. The long cage handles cassettes up to 45T.

• Handles cassettes up to 45T, providing low gears for steep climbs
• Long SGS cage with a total capacity of 36T for use with two front chainrings
• The Shadow RD+ spring keeps the chain stable over rough terrain
• 13T pulleys with sealed bearings for a smooth-running drivetrain
• Weighs just 0.284 kg and mounts directly to the frame

Technical specifications

• Model: RD-M8120-SGS
• Speed: 12
• System: 2 x 12-speed
• Cage: SGS (long)
• Maximum sprocket: 45T
• Total capacity: 36T
• Maximum front difference: 10
• Weight: 0.284 kg
• Mounting: Direct mount
• Pulleys: 13T; sealed bearings on guide and tension pulleys

Founded in 1921 in Sakai, Japan, by Shozaburo Shimano, Shimano is still based in the same city today. For cyclists, it makes drivetrains, brakes, wheels, pedals and cycling shoes. Its history in bicycle components began with the production of freewheels in 1922.