microSHIFT M21 Rear Derailleur - 6,7 Speed, Long Cage, Black Bike Brand_GT Features inner and outer plate

Features inner and outer plate chamfering to aid in smooth shifting

9-grade bolts that are corrosion-resistant and hidden

Includes self-leveling helmet mount

from bright sunny days to overcast or shady conditions

microSHIFT M21 Rear Derailleur - 6,7 Speed, Long Cage, Black Bike Brand_GT Features inner and outer plateM21 rear derailleurs are designed to work with 6 and 7 speed Shimano road and mountain shifters. Enjoy the wide variety of bikes you can get going again with M21 rear derailleurs. Robust composite and steel construction Compatible with Shimano 6 and 7 speed mountain and road systems Long cage for double or triple 32T setup Color: Black Largest Cog: 32 Rear Derailleur Mount Type: 10x1 Standard Chain Wrap Capacity (teeth): 43 Rear Der Shifter