ES51 68 x 121mm Octalink V2 Spline English Bottom Bracket

The Shimano ES51 is a high - quality English bottom bracket with a 68mm shell width and a 121mm spindle length. It features the Shimano Octalink V2 spline, which fits Shimano Octalink V2 spline cranksets perfectly. This bottom bracket is colored in sleek black and weighs 270 grams. Note that crankarm fixing bolts are not included. With a 1.37 - inch bottom bracket shell inner diameter, it offers a reliable and smooth performance for your bike.

Using this Shimano ES51 bottom bracket is easy. First, make sure your bike frame has the right specifications that match the bracket, like a 1.37 - inch inner diameter and 68mm shell width. Then, install it onto the frame carefully. Remember, you'll need to get your own crankarm fixing bolts as they're not included. When you're riding, this bottom bracket should provide a smooth and stable performance. For maintenance, it's a good idea to keep it clean. After a long ride in dirty or wet conditions, wipe it down with a dry cloth. Check it regularly for any signs of wear or damage. If you notice anything wrong, it might be time to replace it.