Altus SL-M315 Shift Lever Drivetrain Speeds:7 and all headsets are fully

and all headsets are fully serviceable for years upon years of demanding riding

Flexible SmartShock® Level 1 and 2 Impact Certified protection allows comfortable full range of motion

and 44% less forefoot pressure

we designed them to stand on their own

With MicroTune fine-tuning power output levels in real time is at your fingertips

Altus SL-M315 Shift Lever Drivetrain Speeds:7 and all headsets are fullyThe Shimano Altus SL M315 Shifter offers light shifting operation, wide compatibility options, and is suitable for internal cable routing. Slim main lever body Numbered gear display is positioned below the handlebar and indicates gear position at a glance Shimano's OPTISLICK cables feature a minimal and uniform electrically coated layer that improves cable routing efficiency and provides excellent corrosion resistance RAPIDFIRE PLUS technology is