BB-UN300

The BB-UN300 is a simple and reliable square taper bottom bracket, designed to replace both the BB-UN26 and BB-UN55 models. It features sealed cartridge bearings, ensuring smooth operation and durability, making it a solid choice for various bike builds, from commuting to touring.

Key Features:

• Bearings: Sealed steel cartridge bearings for low maintenance and long-lasting performance, keeping dirt and moisture out.
• Axle Material: Cr-Mo (Chromoly) axle, known for its strength and durability.
• Compatibility Options:
  • For bicycles with a chain case, choose the BB-UN300-K version.
  • For compatibility with E-type front derailleurs, select the BB-UN300-E version.
• Bottom Bracket Shell Thread: British threading, a common standard for most modern bikes.
• Interface: Square taper, a widely used and simple-to-install design.
• Fixing Bolts: Not included, but Shimano FC-E6000 bolts are recommended for use with this bottom bracket.
• Color: Silver, giving it a clean, classic appearance.

This bottom bracket is a versatile and dependable component, ideal for riders looking for an easy-to-maintain solution for their drivetrain. With its sealed bearings and strong axle, it's perfect for both everyday use and more demanding applications.