Shimano BB-UN300 Square Type Bottom Bracket 68x118mm

Get the high - quality and high - performance Shimano Tourney TX800 series square bottom bracket with cartridge bearings. It's a perfect fit for 68mm bottom bracket shells and has an axle length of 118mm.

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 and attach the axle. When riding, you'll notice a smooth and reliable performance. For maintenance, keep it clean and dry. After riding in wet conditions, wipe it down to prevent rust. Check the bearings regularly for any signs of wear. If you notice any strange noises or reduced smoothness, it might be time to service or replace the bearings.