Box Three Prime 9 X-Wide Rear Derailleur Size:X-Wide Cage They have a black with

They have a black with a white background (colored backgrounds are available separately)

It is a three-piece crank in search of performance gains and weight savings

Number Plate Diagram

The 144L option is ideal for cargo and long wheelbase bikes

The key difference is its 8-speed platform

Box Three Prime 9 X-Wide Rear Derailleur Size:X-Wide Cage They have a black withThe Box Three Rear Derailleur simplifies the features found on the Prime 9 Box One and Two rear derailleurs making for a fully featured wallet friendly rear derailleur. Including a Limited Slip Clutch, Sealed bearing pulleys and a solid construction Box Three Rear derailleurs are compatible with 11 46 and 11 50t derailleurs making it one of the most versatile derailleur offerings for Prime 9. IMPORTANT NOTES Prime 9 Technology View Prime 9 Drivetrain