Shimano CUES Rear Derailleur RD-U4010 9/10-speed
 
The Shimano CUES RD-U4010's compact cage design is optimized to provide plenty of ground and tire clearance while maintaining smooth shifting performance for small-wheel bikes
 
Greater clearance: With more ground and tire clearance than standard Shimano CUES rear derailleurs, it is ideal for small-wheel bikes.
 »Wide range of gear choices: Compatible with 9-speed (11-36T) and 10-speed (11-39T) Linkglide cassettes.
 »Easy maintenance: With no cable adjustment barrel, you get more clearance for easy tire removal and maintenance.
 »E-Bike Rated: Designed for dependable performance on small-wheel E-Bikes.