Shimano CUES SL-U4000-L Shifter - Left 2-Speed Rapidfire Plus Mono Optical Gear Display Black. This Shimano CUES SL-U4000 Rapidfire Plus Mono 2x shift levers refined shape and light operation provide riders with a comfortable easy-to-use interface.

Light and responsive front shifting improves efficiency and control

Rapidfire Plus Mono shifts both up and down with a single lever

Easily-visible gear position indicator option improves shifting control

1800mm Optislick inner shift cable improves cable routing efficiency and provides excellent corrosion resistance

Clamp band mount type