Box One Prime 9 Rear Derailleur - boxcomponents
Box One Prime 9 Rear Derailleur - Box®
Box One Prime 9 Rear Derailleur - Box®
Box One Prime 9 Rear Derailleur - Box®
Box One Prime 9 Rear Derailleur - Box®
Box One Prime 9 Rear Derailleur - Box®
Box One Prime 9 Rear Derailleur - Box®
Box One Prime 9 Rear Derailleur - Box®
Box One Prime 9 Rear Derailleur - Box®
Box One Prime 9 Rear Derailleur - Box®
Box One Prime 9 Rear Derailleur - boxcomponents
Box One Prime 9 Rear Derailleur - Box®
Box One Prime 9 Rear Derailleur - Box®
Box One Prime 9 Rear Derailleur - Box®
Box One Prime 9 Rear Derailleur - Box®
Box One Prime 9 Rear Derailleur - Box®
Box One Prime 9 Rear Derailleur - Box®
Box One Prime 9 Rear Derailleur - Box®
Box One Prime 9 Rear Derailleur - Box®
Box One Prime 9 Rear Derailleur - Box®

Box One Prime 9 X-Wide Rear Derailleur

$194.99 Sale Save
Size X-Wide Cage
Color Black

Only 0 left in stock

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

      FAQ

      Prime 9 Box One & Two Installation

       

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

      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. 

      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

      Our Best Performing Derailleur
      For Aggressive Terrain
      Adjustable Tri-Pack™ Limited Slip Clutch
      Precision Sealed Bearing Pulleys
      Carbon-Nylon Composite Knuckle
      Pivot-Tech™ Cable Stay
      Durable 3D Forged Linkages
      Forged Inner and Outer Cage
      Compatible with Standard 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 Stainless Steel, Hardened Alloy Steel, Nylon Composite
      Finish Hard Onyx
      Weight 290g/10.2oz