ROLLER BEARING CLUTCH technology delivers maximum drivetrain stability-even through the most punishing terrain

Cover Material: Silk-Tech Lycra

without a front wheel and still cover the mileage in front of you

sold as a pair

Great for rims

Shimano DEORE RD-M8120 12 Rear Derailleur Long Black/Gray compatio_raw ROLLER BEARING CLUTCH technology deliversThe all new SHIMANO DEORE XT M8100 series of derailleurs brings a new level of drivetrain silence thank to decreased tension in the low gear position and an added bumper on the pulley cage. Larger 13T pulleys increase efficiency and chain management while compatibility with SHIMANO's new 12 speed cassettes boosts range. Fast and precise shifting performance optimized to take on any trail Faster and shockless shifting HYPERGLIDE+ Extra wide range with