—$83.99
The Box Three Prime 9 Rear Derailleur is a simple, but fully-featured and wallet-friendly rear derailleur. It includes a limited slip clutch, sealed bearing pulleys and a solid construction. It is compatible with 11-46 and 11-50t cassettes making it one of the most versatile derailleur offerings for Prime 9 drivetrains. Prime 9 technology offers the same range as a 12-speed drivetrain, with fewer gears to shift through The limited slip clutch engages instantly and offers constant torque for less chain slap, better chain engagement and no dropped chains Stamped front and rear cage Direct channel cable stay Bearing pulleys Item Specifications Cage Length Long Chain Wrap Capacity (teeth) 39 Color Matte Black Designed for ebike Yes Drivetrain Speeds 9 Largest Cog 50 Rear Der/Shifter Compatibility BOX Prime 9 Rear Derailleur Mount Type 10x1 Standard Weight 349 BOX Three Prime 9 Rear Derailleur Rear Derailleur UPC: 639266097334
Mpn: BX-DR3-P9AXWC-BKby BOX
—$68.99
The BOX Four Rear Derailleur is an affordable clutch-based 1x8-speed derailleur that is both simple and lightweight. Engineered with BOX's "8 is Enough" drivetrain philosophy Limited Slip Clutch Bearing pulleys Nylon composite knuckle Direct channel cable stay Die-cast linkages Stamped inner and outer cage Compatible with standard derailleur hanges (non-direct mount) Item Specifications Cage Length Medium Chain Wrap Capacity (teeth) 31 Color Black Designed for ebike Yes Drivetrain Speeds 8 Largest Cog 42 Rear Der/Shifter Compatibility BOX 8-Speed Rear Derailleur Mount Type 10x1 Standard BOX Four 8-Speed Rear Derailleur Rear Derailleur UPC: 639266097402
Mpn: BX-DR4-08AWC-BKby BOX
—$194.99
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) Item Specifications Cage Length Long Chain Wrap Capacity (teeth) 39 Color Black Designed for ebike Yes Drivetrain Speeds 9 Largest Cog 50 Rear Der/Shifter Compatibility BOX Prime 9 Rear Derailleur Mount Type 10x1 Standard BOX One Prime 9 Rear Derailleur Rear Derailleur UPC: 639266097228
Mpn: BX-DR1-P9AXWC-BKby BOX
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