The Thunderbolt needs a Press Fit BB92 bottom bracket, meaning that it's 92mm wide with a 41mm diameter shell. PF30 BB's are not compatible.
Thunderbolt Bottom Bracket Size Print
Modified on: Fri, 12 Jun, 2020 at 6:01 PM
Did you find it helpful?Send feedback
Sorry we couldn't be helpful. Help us improve this article with your feedback.