- Prime 9 Technology for less derailleur travel and better chainline. Less wear and improved lifespan
- Box One features: Adjustable Tri-Pack limited slip clutch, forged inner and outer cage, Pivot-Tech cable stay, sealed bearing pulleys and 3D forged linkages
- Box Two features: Tri-Pack limited slip clutch, forged inner and outer cage, Pivot-Tech cable stay, sealed bushing pulleys and 3D forged linkages
- Box Three features: Limited Slip Clutch, stamped front/rear cage, direct channel cable stay and bearing pulleys
- Box Four features: 8 speed with Prime 9 technology and the same construction as Box Three
- Limited Lifetime Warranty
| Model | Box Four Prime 9, Box Three Prime 9 |
| Mount | 10x1 Standard |
| Speed | 8, 9 |
| Cage | Wide, X-Wide |
| Retention | Clutch |
| Min/Max | 11/42t, 11/50t |
| Capacity | 31t, 40t |
| Weight | 290g |
| Color | Black |
If you don't see exactly what you need or have questions about any product, contact us and we'll do our best to answer your questions and help you find what you need.
