- 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
- Same functions as the Box One Prime 9 derailleur with more affordable materials
- Glass fiber/nylon composite, steel, aluminum alloy
- Tri-Pack limited slip clutch
- Forged inner and outer cage
- Pivot-Tech cable stay
- Precision sealed bushing pulleys
- DER BOX RR TWO PRIME 9 9s X-WIDE BK
Max: 50
Cage/Mount: Long
Ratio: 2to1
Color: BLK
Type: Mechanical
