Using a low profile SHIMANO SHADOW RD design, the SHIMANO DEORE M4120 derailleur is perfect for 2x10 and 2x11-speed MTB riding. SHIMANO Deore 10S SL-M4100-R. SHIMANO Deore 10S RD-M4120 SGS. SHIMANO DEORE - RAPIDFIRE PLUS - Right Shift Lever - Clamp Band - 10-speed.
