SHIMANO - BOTTOM BRACKET - BB-UN55 - 68/113

BB-UN55 is one of the most widely used Shimano square taper bottom brackets. A square cone connects the bottom bracket axle with the crank. BB-UN55 is available in a variety of designs for use on the road, off the road and in the city.

• BSA 68x113
• Threads: BSA
• Shell Width: 68 mm
• Axle Length: 113 mm
• Contents: not incl. crank bolt
• Manufacturer Part Number: E-BBUN55B13