Experience unrivaled MTB shifting performance with the SHIMANO DEORE M5120 rear derailleur, utilizing the innovative SHIMANO SHADOW RD+ design. This low-profile derailleur not only avoids damage from rocks but also features chain stabilizing technology to reduce chain drop and ensure a quiet drivetrain in all gears. With a maximum low sprocket of 46T for 1x10 setups and 42T for 2x11/2x10 setups, you'll be ready to conquer any terrain with ease.