BOX Four 8-Speed Wide Rear Derailleur bar Washable Liners: The comfort liner

Washable Liners: The comfort liner

ensuring comfort and protection

Enhanced Breathability

Go climb a mountain

Low profile

BOX Four 8-Speed Wide Rear Derailleur bar Washable Liners: The comfort linerThe Box Four Rear Derailleur is the base level of Prime 9 Technology, providing an affordable, clutch based 1x8 speed derailleur that is both simple and lightweight. This makes it an ideal choice for entry level bikes. Features; 8 Speed Limited Slip Clutch Bearing Pulleys Nylon Composite Knuckle Die Cast Linkages Stamped Inner and Outer Cage For light medium terrain Specifications; Materials Aluminum, Glass Fiber Nylon Composite Finish Matte Black