and easy to use clip system

ProGrip also offers excellent mileage and decent sidewall protection

Max cassette range: 42T(2x11-speed) 46T(1x11-speed)

Nice and wide

Pre-curved 3D design for optimal fit

BOX Three Prime 9 Speed X-Wide Derailleur - 9 Speed PDP|Colour and easy to use clipBOX shook up the drivetrain market with the release of their wide range 9 speed drivetrains. The prime 9 derailleurs are built for 11 50t cassettes without all the headaches of adjusting 12 gears. The Box Three Prime 9 rear derailleur is Box's value prime 9 offering. It features a non adjustable clutch, bearing pulleys and wallet friendly price tag. Who's this item for: Anyone already running a Box Prime 9 speed drivetrain or those looking to upgrade