New Shimano M660 SLX front mech. Replaces the M580 LX.

• Lightweight front Top 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 to 48 tooth outer ring compatible.

*Picture shows conventional swing.