Box One Prime 9 X-Wide Rear Derailleur
SKUBX-DR1-P9AXWC-BK
The Box One Prime 9 Rear Derailleur takes the advantages of our legacy 9-speed drive-train but adds the advancements of a modern 1 by; a fully adjustable Tri-Pack™ Clutch, and an x-wide cage optimized for an 11-50T cassette. Forged construction steps up the durability and performance to an unparalleled level. Suited for the most demanding terrain.
IMPORTANT NOTES
- Prime 9 Technology™
- View Prime 9 Drivetrain Compatibility Manual
- How is the Ebike variant different?
- View Prime 9 Comparison Chart
- View Prime 9 E-Bike Comparison Chart
- Why Prime 9?
Great Derailleur
This is my third one, and I love the simplicity of 9 gears and an uncomplicated clutch system that works. The only reason I had to replace my last one was because I slammed into a tree and bent the arm. I love Box's customer service too!
Box one
I had box two and loved it so I upgraded to box one. Still love it.
Love this thing
Can’t get enough!!!! Keeps me on trail for more miles with less issues
Better than the box 2
I'd like to add the box 1 shifter before my judgment!