Shimano BB-RS501- Bottom Bracket - Threaded - HOLLOWTECH II - 68/73 mm shell width. The Shimano BB-RS501 bottom bracket uses a new seal construction for long-lasting performance. Shimano Disc Brake Mineral Oil 1L.
The Shimano BB-RS501 Bottom Bracket Cups are perfect for those looking for high-quality, efficient, and durable bottom bracket cups, designed to work with Shimano systems and suitable for both 68mm and 73mm chainrings.
