Shimano Ultegra FC-6800 11-speed chainrings are a great choice for cyclists. They are designed for a 110mm bolt circle 4-arms spider. The Hollowglide technology makes the chainrings hollow, which saves weight and greatly improves stiffness and aerodynamics. This ensures excellent power transfer and better shifting performance. Note that these chainrings come in different types (MA, MB, MD). For the best shifting, use chainrings of the same type. So, it's advisable to pair MA with MA, MB with MB, and MD with MD. Specifications include an anodized aluminium material, available in black or grey. The weight varies according to the number of teeth: around 114 grams for 50T, 34 grams for 34T, 40 grams for 39T, 88 grams for 46T, 121 grams for 52T, and 121 grams for 53T. The chainwheel has options of 34, 36, 39, 46, 50, 52, or 53 teeth and is suitable for 2/3 - 11-speed derailleurs.

Using your Shimano Ultegra Fc-6800 11 Speed Chainring is straightforward. First, make sure to choose chainrings of the same type (MA, MB, or MD) for the best shifting performance. When installing, ensure it fits properly on the 110mm bolt circle 4-arms spider. During use, you'll notice the smooth power transfer and great shifting thanks to the Hollowglide technology. As for maintenance, keep it clean by wiping it regularly with a dry cloth. Avoid using harsh chemicals as they can damage the anodized aluminium finish. If you notice any signs of wear, such as uneven teeth, it might be time to replace the chainring.