microSHIFT M21 Rear Derailleur - 6/7 Speed Super Short Cage Dropout Claw Hanger BLK Tooth Count-14 One Way bleeding makes cleaning

One Way bleeding makes cleaning and bleeding the system easy

Original equipment on SRAM and Truvativ cranks they also work well with other drive trains

Volume (mL) 10

Length 143

microSHIFT M21 Rear Derailleur - 6/7 Speed Super Short Cage Dropout Claw Hanger BLK Tooth Count-14 One Way bleeding makes cleaningmicroSHIFT M21 Rear Derailleur 6 7 Speed Super Short Cage Dropout Claw Hanger Black. 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 TECH SPECS Largest Cog 30Rear Der Shifter Compatibility Shimano MountainRear