Shimano STI Ultegra di2 R8170 Left Side 12sp TT Not as light as the

Not as light as the “Piuma”

COLOR ：TiN Gold

X-Range gearing technology gives you more range and a smoother gear progression

It’s a treatment that makes water and dirt slip off your lenses

SERVO WAVE technology enhances braking control

Shimano STI Ultegra di2 R8170 Left Side 12sp TT Not as light as theShimano's 8100 Ultegra series offers an excellent price performance ratio, reflecting years of experience in functionality, durability, and weight. This top group revolutionizes Di2 components with wireless technology, providing the fastest, most reliable gear shifts in cycling. The precise levers prevent accidental shifts, while the low energy wireless chip lasts over 1. 5 years. With the Shimano E Tube app, you can fully customize shifting logic.