Box Four 8 Speed Wide Rear Derailleur Color:Black and SRAM setups

and SRAM setups

There are also the "Compact" variations that are fitted out with upright shift levers

The Box Two chain's nickel plating adds both corrosion and wear-resistance

providing superior performance in any conditions

Box Four 8 Speed Wide Rear Derailleur Color:Black and SRAM setupsThe Box Four Rear Derailleur is the base of Prime 9 Technology that offers an affordable clutch based 1 by 8 speed derailleur that is simple and light; this makes it a perfect candidate for every entry level bike that traditionally has a 3 by drive train that is neither durable nor user friendly. SUPPORT MATERIAL Prime 9 Technology View Prime 9 Drivetrain Compatibility Manual How is the Ebike variant different? View Prime 9 Comparison Chart View Prime