- 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, no compatible with other 11-50 cassettes
- Similar design as the Box Two Prime 9 derailleur with more affordable materials
- Glass fiber/nylon composite, steel and aluminum construction
- Limited slip clutch
- Stamped inner and outer cage
- Standard bushing pulleys
- Direct channal cable stay
- DER BOX RR THREE PRIME 9 9s X-WIDE BK
Max: 50
Cage/Mount: Long
Ratio: 2to1
Color: BLK
Type: Mechanical
