Tackle trails with this versatile Shimano CUES RD-U6000 Shadow+ 1x10/11-speed rear derailleur's seamless shifting and pedaling. Its low-profile design and chain stabilization give riders the confidence to choose rougher routes. ONLY compatible with Shimano CUES 10- and 11-Speed LINKGLIDE shifters. ONLY compatible with Shimano CUES 10- and 11-Speed LINKGLIDE shifters Stable drivetrain performance on trails gravel and city streets Chain stabilizer reduces chain drop slap and noise Shadow+ low-profile design is optimized for rough terrain Designed and tested to provide enduring e-biking performance 13t pulley wheels