SHIMANO Square Type Bicycle Bottom Bracket - BSA 73MM, Spindle: 122.5MM (LL123) - EBBUN300C23X

Details

• Optimized for JIS square-taper cranksets, the BB-UN300 Bottom Bracket provides reliable performance and durability for a smooth cycling experience.
• Constructed with a hollow spindle for improved weight savings and enhanced stiffness, boosting pedaling efficiency and power transfer on every ride.
• Designed to fit 73mm wide BSA (English) frames with a 1.37-inch shell ID, ensuring universal compatibility with a wide range of mountain and road bikes.
• Featuring materials and precision engineering, this bottom bracket offers long-lasting corrosion resistance and smooth rotation for demanding cycling conditions.
• Stylish black finish complements any bike setup, making it an ideal choice for both performance-oriented riders and casual cyclists seeking dependable, easy-to-maintain components.