T4tomo
Legendary Member
I upgraded the BB on my road bike and was amazed at the difference.
I amazed you were amazed, unless there was something wrong with the incumbent BB. I switched my Brompton BB when was replacing the broken crankset / chainring, as it 10 yrs old and I had the cranks off anyway and a BB is cheapish.
I noticed the diff when I changed it on my gravel bike, but only because the BB casing has cracked inside the shell so it was making a right old racket.