Replacement inner chainring for Shimano Ultegra 6800 chainsets. This 34T chainring is designed for use with a 50T outer ring and features a 110mm bolt circle diameter. It is compatible with Shimano HG 11-speed chains and is ideal for road, time trial, and triathlon disciplines. The grey coloured chainring offers an optimal balance of lightweight design and rigidity for precise shifting, even under high load. Teeth are specifically developed for 11-speed HG chains to improve contact, efficiency, and power transfer.