Get the Shimano Ultegra FC - 6800 11 - speed chainrings designed for a 110mm bolt circle 4 - arms spider. The Hollowglide technology makes these chainrings hollow, saving weight while significantly boosting stiffness and aerodynamics. This ensures top - notch power transfer and excellent shifting performance. Note that these chainrings come in different types (MA, MB, MD). For the best shifting, use chainrings of the same type. It's advised to match MA with MA, MB with MB, and MD with MD. Specifications: Material is Aluminium Anodised. Weights vary: 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. Available tooth numbers are 34, 36, 39, 46, 50, 52, and 53. It fits 2/3 - 11 - speed derailleurs. The bolt circle is 110mm, and the colours are Black / Grey.

Using your Shimano Ultegra Fc - 6800 chainring is easy. First, make sure you choose chainrings of the same type (MA, MB, MD) for the best shifting performance. Install the chainring on your bike's 110mm bolt circle 4 - arms spider and connect it to a 2/3 - 11 - speed derailleur. When riding, you'll notice the great power transfer and smooth shifting thanks to the Hollowglide technology. As for maintenance, keep it clean. You can use a mild bike cleaner and a soft brush to remove dirt and grime. After cleaning, dry it thoroughly to prevent rust, especially since it's made of anodised aluminium. Check the chainring regularly for any signs of wear, like chipped teeth, and replace it if needed to keep your bike running at its best.