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.
- 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‚Ñ¢ Limited Slip clutch
- Precision sealed bearing pulleys
- Carbon-nylong composite knuckle
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 |
