Shimano BB-UN300 Bottom Bracket British Thread, 68 - 118 mm - Silver 127.5mm

A good quality bottom bracket for traditional chainsets. Key Features Super-accurate bearings for smooth operation and improved durability Durable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fitting Maintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing life Fast and easy installation without adjustment Narrow body allows clearance for cable routing under the bottom bracket