microSHIFT M21 Rear Derailleur - 67 Speed Short Cage Black Weight-1145g housing and structural parts of

housing and structural parts of the locking mechanism are made of specially hardened steel

This is NOT the tool for the Shimano/SRAM/Campy conversion BB

The ZigZag Basket is a clean sturdy take on the classic bicycle basket

The TRP-25 2-piece slotted centerlock disc rotor offers high heat dissipation and tolerance due to the aluminium center as well as excellent stiffness to provide confidence in your braking

Low-profile Race Aluminum rims add radial compliance and traction without reducing steering precision and feel

microSHIFT M21 Rear Derailleur - 67 Speed Short Cage Black Weight-1145g housing and structural parts ofmicroSHIFT M21 Rear Derailleur 67 Speed Short Cage 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 6 Drivetrain Speeds 7