Shimano
XTR M971 Rear Derailleur - GS Medium Cage

• Precision engineered rear derailleur for the ultimate in shifting performance and durability - as used by elite off-road racers the world over!
• Top normal spring uses the spring to select higher gears, best suited to use with Rapidfire shifters
• High tolerance cold forged aluminium construction for extremely light weight, strength and durability
• High rigidity wide outer link braces the pulley body to increase pivot joint rigidity
• Four fluorine-coated link pivot bushings enhance low-friction shifting
• Sealed bearing guide and tension pulleys for low friction and smooth running of the drivetrain
• Mega9 high precision 9-speed drivetrain compatible
• Detachable rubber bumper for inner chain cage guide to reduce noise and frame damage
• Weight - 198g for GS cage length