microSHIFT M21 Rear Derailleur - 67 Speed Short Cage Dropout Claw Hanger BLK Model=CBP-8 Split glass-reinforced polyamide crown race

Split glass-reinforced polyamide crown race

D-Fly compatible

Bonus storage space—fits a presta-to-schrader adapter and valve core or a master link (both sold separately)

ClickTec button interface for easy use

}WTB Silverado Saddle - Chromoly Black Narrow

microSHIFT M21 Rear Derailleur - 67 Speed Short Cage Dropout Claw Hanger BLK Model=CBP-8 Split glass-reinforced polyamide crown racemicroSHIFT M21 Rear Derailleur 67 Speed 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 Cage Length Short Chain Wrap Capacity (teeth) 39 Color Black Drivetrain Speeds 7