microSHIFT M21 Rear Derailleur - 6,7 Speed, Long Cage, Black Bike Brand_GT BB86/92 Thread Together Bottom Bracket

BB86/92 Thread Together Bottom Bracket

from bright sunny days to overcast or shady conditions

Its lightweight aluminum frame provides a responsive and agile ride

And high-quality silicone leg grippers keep the short in place without constricting movement

Features inner and outer plate chamfering to aid in smooth shifting

microSHIFT M21 Rear Derailleur - 6,7 Speed, Long Cage, Black Bike Brand_GT BB86/92 Thread Together Bottom BracketM21 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