Shimano FD-M290 is a front derailleur designed for triple front chainwheel use, offering precise and smooth shifting between chainrings. It is compatible with Shimano ACERA-X series Rapidfire shifters and SIS-SP outer casing for optimal performance. The derailleur features a Pro-Set alignment block for easy and accurate installation, ensuring proper alignment between the chain guide and chainrings. With its durable construction and reliable shifting, the Shimano FD-M290 is suitable for a wide range of mountain biking applications, providing riders with efficient and effortless gear changes.