🚴♂️ Gear Up for Greatness! 175 mm crank length tailored for maximum efficiency. Join the elite cycling community with this top-tier Ultegra chainset. Experience the cutting-edge 12-speed system for seamless shifting. Designed with a 52/36T chainring for versatile performance. Crafted from hollow aluminium for optimal strength-to-weight ratio. Hollow Aluminium Strength 175 mm Crank Length 12-Speed Precision The SHIMANO Ultegra FC-R8100 is a high-performance 12-speed double chainset featuring hollow aluminium cranks, a 52/36T chainring configuration, and a 175 mm crank length, designed for cyclists seeking precision, durability, and speed.