BRAND NEW – NEVER INSTALLED – ORIGINAL BOX

For sale is a BOX One Prime 9 X-Wide Rear Derailleur, brand new and never installed.

This is the BOX One version of the Prime 9 derailleur and features the X-Wide cage designed specifically for the wide-range 11-50T Prime 9 cassette.

BOX One is the top-level Prime 9 derailleur, featuring a forged construction, adjustable Tri-Pack™ limited-slip clutch, sealed-bearing pulleys, and a durable X-Wide cage.

Specifications

• Brand: BOX Components
• Model: BOX One Prime 9
• Part Number: BX-DR1-P9AXWC-BK
• Speed: 9-speed
• Cage: X-Wide / Long Cage
• Cassette Range: 11-50T
• Color: Black
• Weight: 290g
• Shifting: Mechanical / cable actuated
• Mount: Standard derailleur hanger / non-direct mount
• Clutch: Adjustable Tri-Pack™ Limited Slip Clutch
• Pulleys: Precision sealed-bearing
• Condition: New in Box – Never Installed

Features

• Prime 9 drivetrain technology
• Designed for wide-range 9-speed drivetrains
• X-Wide cage optimized for 11-50T cassettes
• Adjustable clutch helps maintain chain tension and reduce chain slap
• Forged inner and outer cage
• 3D-forged linkages
• Precision sealed-bearing pulleys
• Pivot-Tech™ cable stay

Compatibility

IMPORTANT: This derailleur is designed specifically for the BOX Prime 9 drivetrain.

It is not a Shimano-compatible derailleur, even though it uses a standard derailleur hanger. BOX Prime 9 uses its own shifting system and should be paired with compatible BOX Prime 9 components.

Cassette: Designed for Prime 9 11-50T and compatible Prime 9 12-50T e-bike cassette configurations.

What's Included

• 1 × BOX One Prime 9 X-Wide Rear Derailleur
• Original factory packaging
• Any manufacturer-supplied hardware/documentation included in the box

Shifter, cassette, chain and other drivetrain components are NOT included unless shown in the photos.