BOX One Prime 9 X-Wide Rear Derailleur
$194.99 USD
/
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BOX One Prime 9 X-Wide Rear Derailleur
$194.99 USD
/
BOX One Prime 9 X-Wide Rear Derailleur
$194.99 USD
/
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About this product
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-Pack™ Limited Slip clutch
- Precision sealed bearing pulleys
- Carbon-nylong composite knuckle
- Pivot-Tech™ cable stay
- Durable 3D forged linkages
- Forged inner and outer cage
- Compatible with standard derailleur hangers (non-direct mount)
Fast, Reliable Shipping
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Lowest Price, Guaranteed Value
Most in-stock bikes ship within 1–3 business days—get riding sooner.
Talk to our Arizona-based team for product advice, service, or local pickup help.
We price our bikes as low as possible—no hidden markups, no surprises.