The Shimano CUES FD-U4000 derailleur is a high-quality accessory for shifting and drivetrain, specifically designed for mountain bikes and trekking bikes. With its top-swing construction and dual-pull cable routing, this derailleur allows for smooth and quiet shifting, significantly enhancing the riding experience. It is compatible with 9- and 10-speed systems and supports chainring sizes of up to 40 teeth. The design also provides greater clearance for tires, increasing the versatility and adaptability of the derailleur. The FD-U4000 is compatible with Linkglide and requires an HG 11-speed chain, making it an ideal choice for modern bicycles. With a seat tube diameter of 31.8 mm and the ability to adjust to 34.9 mm and 28.6 mm, this derailleur is versatile and offers reliable performance for various types of bikes.

• Compatible with 9-/10-speed systems
• Top-swing construction for optimal shifting
• Dual-pull cable routing for flexible mounting
• Maximum chainring size of 40 teeth
• Increased tire clearance for better adaptability.