microSHIFT M21 Rear Derailleur - 6,7 Speed, Long Cage, Black Bike Accessories Brand_Rock N Roll Key features like multi-stage foam

Key features like multi-stage foam

BBS02 mid-drive motor lockrings

Made in Boise

High-Efficiency Motor

Whether you're cycling or playing baseball

microSHIFT M21 Rear Derailleur - 6,7 Speed, Long Cage, Black Bike Accessories Brand_Rock N Roll Key features like multi-stage foamM21 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