ACERA M3000 component group is characterized by three keywords: accurate, precise and stylish. This group provides accurate shifting with less pedaling power loss, strong braking power, excellent braking efficiency for precise speed control, an exciting stylish design and slim profile. For the rear shifter you can pick 7 or 8spd. The front shifter is 3 spd only and will work with 7 or 8 spd rear geared bikes.

• Easy to read optical gear display
• Ergonomic shape
• Smooth light action
• Shimano Reference Number: SL-M310 ESLM310R8ATP