Product Description
The Box One Prime 9 Rear Derailleur takes the advantage of BOX’s legacy 9-speed drivetrain but adds the advancements of a modern 1x; a fully adjustable Tri-Pack(TM) 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. Designed for aggressive terrain. Adjustable Tri-Packâ„¢ Limited Slip clutch. Precision sealed bearing pulleys. Carbon-nylong composite knuckle. Pivot-Techâ„¢ cable stay. Durable 3D forged linkages. Forged inner and outer cage. Compatible with standard derailleur hangers (non-direct mount).
Product Specifications
- Weight: 1.15 pounds
- Gear Speeds: 9
- Bike compatibility: Universal
- Cage Length: Long
- Model #: BX-DR1-P9AXWC-BK
- Largest Cog: 50
- Material: Carbon Steel
- Warranty: Multiple Warranties and/or Time Frames Apply. To obtain a copy of the manufacturer’s or supplier’s warranty for this item prior to purchasing the item, please call Target Guest Services at 1-800-591-3869
Product Highlights
- Designed for aggressive terrain
- Adjustable Tri-Packâ„¢ Limited Slip clutch
- Precision sealed bearing pulleys
- Carbon-nylong composite knuckle
- MPN: BX-DR1-P9AXWC-BK, UPC: 639266097228






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