MicroShift RD-M21 6\/7V Rear Derailleur

The M21 is MicroSHIFT’s entry-level derailleur, but it is not a low-end model. With the same kinematics as more expensive derailleurs and innovative construction techniques, the M21s offer excellent performance for an affordable priceDetails: 2/3 x 6/7 speed. Heavy-duty derailleur body improves rigidity and shifting performance. Max sprocket 28-30T. Mini sprocket 13-14 T. Capacity 43 T. Compatibility: Shimano Mountain. Color: Black.