Shimano BB-UN300

The Shimano BB-UN300 bottom bracket is a high-quality and powerful square taper bottom bracket suitable for a variety of bicycles. With a shell width of 68 mm and an axle length of 122.5 mm, it provides a reliable and stable base for the bottom bracket assembly. The bottom bracket features a BSA installation type, allowing for easy installation and maintenance. The use of aluminum as the adapter material ensures high strength and durability, while the square design guarantees precise power transfer. This bottom bracket is ideal for cyclists who value quality and performance and are looking for a reliable solution for their cycling needs.

• High-quality square taper bottom bracket for improved performance
• Compatible with BSA frames for easy installation
• Aluminum adapter for increased strength and durability
• Suitable for standard, E-Type, and chain case variants
• Screwed bearing cups for easy maintenance.