Shimano Ultegra Di2 ST-R8150 Double STI Lever w/o E-tube Wires - Left Hand

- With Di2 technology shifting is easy and precise - just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gear
- Full and semi synchronized shifting programable, Synchro shift compatible meaning a single shifter can control both front and rear shifting which can be fully custom tuned to your riding preferences. Semi synchronized shifting means when a front shift is made the rear mech will automatically correct to the appropriate ratio
- Simply pressing tactile buttons allows effortless and comfortable shifting even when your hands are cold
- Drop bar STI with shift buttons located in a near identical place to the positions you'd assume shifting using a mechanical Shimano STI
- Servo Wave brake lever pivot is positioned to be used with super SLR brake calipers, increase power providing excellent ergonomics when riding on the hoods
- Finely tuneable reach adjusters for the levers enable custom fitment for all hands
- Wired connection to the front and rear derailleurs with SD300 series wires