Shimano’s BB-RS500 Hollowtech II Bottom Bracket is outboard-bearing and compatible for use with 24 millimeter spindle cranksets.
• Sealed cartridge bearings
&bulll; Bottom bracket for bikes with 68 mm width bottom bracket shell
• Includes cups, bearings, and inner sleeve
• Weight: 92 grams
• Spindle Interface: Shimano Hollowtech II
Brand: Shimano