Shimano BB-UN300 Square Type Bottom Bracket 68x122.5mm

This is a high - quality Shimano bottom bracket from the Tourney TX800 series. It features cartridge bearings and a square design. It fits 68mm bottom bracket shells with an axle length of 122.5mm, offering excellent performance.

Using this Shimano bottom bracket is easy. First, make sure your bike has a 68mm bottom bracket shell. Then, carefully install the bottom bracket into the shell. For a better fit, use appropriate tools. When using your bike, try to avoid riding through deep water or on extremely dirty roads as it may damage the bearings. To maintain the bottom bracket, clean it regularly with a mild cleaner and dry it thoroughly. Lubricate the moving parts occasionally to keep it running smoothly. If you notice any unusual noises or resistance, it's a good idea to check the bottom bracket for wear and tear.