Shimano BB-UN300

The Shimano BB-UN300 is a high-quality bottom bracket designed for improved performance and stability while cycling. It features a sturdy square axle and is equipped with high-quality cartridge bearings that ensure smooth operation. This bottom bracket is available in various mounting types, including standard, E-Type, and chain guard options, making it versatile and adaptable for different bike frames. The use of aluminum for the adapter material provides high strength and durability. With a shell width of 68 mm and an axle length of 118 mm, the BB-UN300 is ideal for many common bike models. It offers easy installation and is suitable for self-installation, making it a practical choice for cycling enthusiasts.

• High-quality cartridge bearings for improved performance
• Various mounting types: standard, E-Type, and chain guard
• Sturdy square axle for increased stability
• Aluminum adapter material for durability.