Other than King and Maxhit to the best of my knowledge with the other bottom brackets you’d replace the BB when the bearing is toast. That said, I think ceramic hybrid bearings are dumb for mountain bike applications so that may not be the case for all units.
With King and MaxHit I’d expect to never replace a bearing. With King if you kill it (have had the experience with a BB but not a headset) they’ll build a new bearing into your cup. With Enduro they’ll replace the headset at no charge.
May 5, 2023, 4:58 p.m. - Andrew Major
Other than King and Maxhit to the best of my knowledge with the other bottom brackets you’d replace the BB when the bearing is toast. That said, I think ceramic hybrid bearings are dumb for mountain bike applications so that may not be the case for all units. With King and MaxHit I’d expect to never replace a bearing. With King if you kill it (have had the experience with a BB but not a headset) they’ll build a new bearing into your cup. With Enduro they’ll replace the headset at no charge.