Description The Hollowtech II crankset will help you transfer more power into speed. It offers weight reduction without sacrificing stiffness. It enables a wide range of gear combinations to suit your every need. Paired with the new front and rear derailleurs, your shifts will be so fast and reliable you'll almost question whether they happened at all! The beautifully shaped crankarm, trickled down from Dura-Ace, is a tribute to the aesthetics of your bike. The cranksets with 50-34, 52-36 and 53-39 teeth are weight-saving thanks to Hollowglide technology and the outer chainring made of aluminium/CFRP. Features & details OEM ULTEGRA FC- R8000 Crankset 50-34T 52-36T 53-39T 165MM 170MM 172.5MM 175MM WO/BB Hollowtech II Crankset Optimized lightweight crank arm design produces excellent power transfer efficiency Minimized weight without sacrificing stiffness Rider tuned gear performance through various gear combinations Product information Brand Name Shimano Ultegra Manufacturer Shiman Part Number FC-R8000 Style 50-34t Size 172.5mm Pre-Owned in good condition with minor scratches in Right Arm and scratches at the tip of both arms, both Chainring mild -moderate used as seen in the pictures but not subjected to rigorous riding and fully funtional! Please evaluate pictures for further assessment to prevent misconception or problem that may arise once purchase by you buyers and seller alike! Thank you for looking. No Return, No Exchange!