BB-UN300 Bottom Bracket - English 68 x 117.5mm Spindle Square Taper JIS

The Shimano BB-UN300 Bottom Bracket is a top - notch choice for your bike. It features a 68mm English bottom bracket shell and a 117.5mm square taper JIS spindle. This bottom bracket fits JIS square - taper cranksets. The crankarm fixing bolts are sold separately. Its hollow spindle design not only reduces weight but also enhances durability. It comes in a sleek black color, adding a touch of style to your bike.

Using the Shimano BB - UN300 Bottom Bracket is quite simple. First, make sure your bike has a 68mm English bottom bracket shell and a JIS square - taper crankset that it can fit. When installing, pay attention to align the spindle properly with the crankset. Remember that the crankarm fixing bolts need to be bought separately and tightened securely. For maintenance, regularly clean the bottom bracket to prevent dirt and debris from building up. You can use a mild cleaner and a soft cloth. Check for any signs of wear and tear on the spindle and the bearings. If you notice any unusual noises or looseness, it might be time to have it inspected or replaced.