BB-UN300 Bottom Bracket - English 68 x 113mm Spindle Square Taper JIS

The Shimano BB-UN300 English bottom bracket is a great choice for your bike. It features a 68mm bottom bracket shell width and a 113mm square taper JIS spindle. This bottom bracket fits JIS square-taper cranksets. The crankarm fixing bolts are sold separately. The hollow spindle design reduces weight. It comes in a sleek black color, adding a stylish look to your bike. Technical specs include a 1.37-inch bottom bracket shell I.D. and an English BB/frame interface.

Using this Shimano BB-UN300 bottom bracket is easy. First, make sure your bike has a JIS square-taper crankset that fits this bottom bracket. Install the bottom bracket into the frame following the standard installation process. Remember, the crankarm fixing bolts are sold separately, so you'll need to purchase them and install them properly. When it comes to maintenance, regularly clean the bottom bracket to prevent dirt and debris from building up. Check for any signs of wear or damage, such as loose parts or unusual noises. If you notice any issues, it's best to replace the bottom bracket or have it repaired by a professional. Also, keep it dry to avoid rusting. With proper use and maintenance, this bottom bracket will serve you well for a long time.