Shimano Ult Fc-R8100 172.5 34X50 AMAZON Rotors 180mm Front /180mm Rear

Rotors 180mm Front /180mm Rear

-Reflective trims

optimized for all-around use

Stable down to -30 degrees Fahrenheit

You want a bike that looks good

Shimano Ult Fc-R8100 172.5 34X50 AMAZON Rotors 180mm Front /180mm RearAn integral part of the Shimano Ultegra 12 speed road lineup, the FC R8100 crankset builds upon Shimano's legendary front shifting and transmission efficiency. With new refinements for seamless 12 speed shifting, the Ultegra crank is now offered in a wide variety of lengths, bringing performance and improved fit for smaller riders, triathletes, and riders with specific biomechanic requirements. 148mm Q factor 44. 5mm chainline Optimal balance of