BB-UN300 Bottom Bracket - English 68 x 110mm Spindle Square Taper JIS

The Shimano BB - UN300 Bottom Bracket is a top - notch choice for your bike. It features an English 68 x 110mm spindle with a Square Taper JIS design. This bottom bracket fits JIS square - taper cranksets perfectly. The crankarm fixing bolts are sold separately. It comes with a hollow spindle for enhanced performance. With a 1.37 - inch inner diameter of the bottom bracket shell, it has an English BB/Frame Interface. The shell width is 68mm, the spindle length is 110mm, and it's stylishly black in color.

Using this Shimano BB - UN300 Bottom Bracket is easy. First, make sure your bike frame has the right BB/Frame Interface, which is English for this product. Then, fit it into the bottom bracket shell with the correct inner diameter of 1.37 inches. When attaching the cranksets, remember that the crankarm fixing bolts are sold separately, so you'll need to get those on your own. As for maintenance, regularly check for any signs of wear and tear. Clean it with a soft cloth and a mild bike cleaner. If you notice any looseness or unusual noises, it might be time to have it inspected or replaced. Keep it in a dry place when not in use to prevent rusting.