Tackle trails with this versatile rear derailleur&';s seamless shifting and pedaling. Its low-profile design and chain stabilization give riders the confidence to choose rougher routes 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 Compatible with LINKGLIDE AND HG 11-speed chains Largest Cog: 50 Rear Derailleur Mount Type: Shimano Rear Direct Mount, 10x1 Standard Chain Wrap Capacity (teeth): 39 Rear Der/Shifter Compatibility: Shimano LINKGLIDE 10sp, or Shimano LINKGLIDE 11sp Compatible Chain: LINKGLIDE, HG 11-speed Designed for ebike: Yes Cage Length: Medium Drivetrain Speeds: 10, 11 Color: Black/Grey