Rear

M21 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

- Replacement plate for M7000-GS rear derailleur - Choose Inner or Outer

• 5/6/7-speed rear derailleur • Highly affordable and reliable • SHIMANO Equivalent RD-TY21 / RD-A070 • 301 grams