- Prime 9 Technology is a counter-intuitive philosophy based on the less is more theory - it embraces range without adding complexity
- Intended for use with Box Components" Prime 9 speed group, not compatible with other 11-50 cassettes
- Carbon fiber / nylon composite, steel, aluminum alloy construction
- Adjustable Tri-Pack limited slip clutch
- Forged inner and outer cage
- Pivot-Tech cable stay
- Precision sealed bushing pulleys
- DER BOX RR ONE PRIME 9 9s X-WIDE BK
Max: 50
Cage/Mount: Long
Ratio: 2to1
Color: BLK
Type: Mechanical
