Box Four 8 Speed Wide Rear Derailleur Color:Black the Box Four shifters take

the Box Four shifters take advantage of the "less is more" theme and exploit durability

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

Box Four 8-Speed 12-42T E-Bike Cassette

providing superior performance in any conditions

Due to its provenance

Box Four 8 Speed Wide Rear Derailleur Color:Black the Box Four shifters takeThe 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