Xt m8025 double front gear direct mount down swing top pull 11 speed lightweight front direct mount dyna sys11 11 speed double mtb derailleur for smooth gear changes top pull only for further increased tyre clearance on 29ers for use with top tube cable routing reinforced light weight chain guide adds rigidity and improved response wider pivot link increases torsional rigidity easy access angled adjustment screws and clamp bolt angled inner chain guide tail for increased tyre clearance dyna s