Hello
I have been surfing the web to find the right dimensions to replace my bottom bracket which i believe is one of these https://www.thebikedr.com/search?q=shimano+bb+un26 with no success
If you guy know which one is the correct size any information will be much appreciated .
My mtb: https://www.vitalmtb.com/product/guide/Bikes,3/Jamis/Nemesis-650-Sport,13956