Shimano Altus SL-M315-L 3-Speed Left Rapidfire Plus Shifter Shimano Ultegra Di2 12 Speed Closure System: Boa® IP1-S two-way

Closure System: Boa® IP1-S two-way micro-adjustment: Custom fit and easy replacement

Secure 3 Strap Design For Added Security

CHAIN: Shimano 105 12S

which remain central to the Utopia Y

Shimano Altus SL-M315-L 3-Speed Left Rapidfire Plus Shifter Shimano Ultegra Di2 12 Speed Closure System: Boa® IP1-S two-wayThe 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