Description

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