Shimano Altus M310 3-Speed Left Shifter

The Shimano M310 Left Shifter makes for a solid upgrade to any 3x7 speed flat bar setup. In true Shimano fashion, the M310 shifters offer smooth, effortless shifting that won't miss a beat. The ergonomic lever shape is easy on the hands and quick to engage, while the optical gear display allows you to see where you're at in the range so you always have an idea of what gear you're in.