SHIMANO XT M771 FRONT MECH - CONVENTIONAL SWING - DUAL PULL - Lightweight front Conventional swing ATB derailleur for smooth gear changes. Dual Pull design for use with top or bottom cable routing. The regular Multi-fit band clamp assures easy and secure fit on any frame type, with adapters to suit seat tube sizes 34.9, 31.8 and 28.6 mm. 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. Designed with Mega9 compatibility for narrow 9-speed chains. 44 tooth outer ring compatible. Weight: 152 g for top swing