New Shimano bottom bracket BB-UN300 BC 1.37 x 24 tpi, 127mm axle width, 68mm shell width.

Shimano Bottom Bracket BB-UN300.

127mm BC137 68

Width 127 mm

Axle length/shell width (mm 127|68 (BC1.37).

New (other) see photos of the actual item the buyer will receive.

Brand:Shimano 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

Lightweight hollow spindle

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