Box Three Prime 9 X-Wide Rear Derailleur Black - boxcomponents
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®
Box Three Prime 9 X-Wide Rear Derailleur Black - boxcomponents
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®
Box Three Prime 9 X-Wide Rear Derailleur Black - Box®

Box Three Prime 9 X-Wide Rear Derailleur

$110.00 Sale Save
Size X-Wide Cage
Color Black

Only 0 left in stock

SKUBX-DR3-P9AXWC-BK

The 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.

FAQ



No, Shimano direct mount hangers are proprietary and are not compatible with Box derailleurs.

Standard Mount vs. Direct Mount Derailleur Hangers

No, traditional 9 speed systems use a Cable Pull that is not compatible with Prime 9.

No, Box Prime 9 derailleurs are not currently compatible with drop bar shifters, but we do offer a clamp for our shifters to mount on some 31.8mm drop handle bars.

We suggest removing the derailleur from the bike and using a soft bristle brush or rag with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.

Please see our installation video at https://boxcomponents.com/collections/support

Q: Can I install this on my bike that uses a b-link for my current derailleur?
A: Yes! All you need to do is remove your old derailleur and the b-link leaving the standard hanger attached to your bike frame. You can now mount your Box Components derailleur directly to the hanger on your frame.

Q: Can I install this on my bike that currently has a direct mount hanger?
A: Possibly, you will need to see if your frame manufacturer or a third party like wheelsMFG offers a standard mount hanger for your frame. 

Our Best All-Rounder Derailleur
For Light/Medium Terrain
Limited Slip Clutch™
Bearing Pulleys
Nylon Composite Knuckle
Direct Channel Cable Stay
Die Cast Linkages
Stamped Inner and Outer Cage
Compatible with Traditional Derailleur Hangers (Non Direct-Mount)
Prime 9 Technology™

Box One Prime 9 11-50T and also 12-50T eBike Cassette Black
Box Two Prime 9 11-50T and also 12-50T eBike Cassette Black
Box Three Prime 9 11-50T and also 12-50T eBike Cassette Black
Box One Prime 9 Chain 126L DLC Black
Box Two Prime 9 126 Link Chain Nickel
Box Three Prime 9 126 Link Chain Polished
Box One Prime 9 Shifter Black
Box Two Prime 9 Shifter Black
Box Three Prime 9 Shifter Black

Material Aluminum, Glass Fiber / Nylon Composite, Steel
Finish Matte Black
Weight 349g/12.3oz