Shimano BB-RS500 Hollowtech II Press-Fit Bottom Bracket

The Shimano BB-RS500 Hollowtech II Press-Fit Bottom Bracket is designed for press-fit frames that are compatible with a 24mm Hollowtech II spindle. This bottom bracket uses a sealed cartridge bearing system to provide smooth rotation and durable performance. The Shimano BB-RS500 is compatible with both road and mountain bike frames that have a press-fit bottom bracket shell with a 41mm diameter.