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)

For the best performance

The two-bolt head design ensures solid seat positioning and plenty of adjustment

Number Plate Diagram

and black with laser-etched graphics and five hollow chromoly Allen bolts

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