BBSwapFinder guides
Practical guides to measuring, sizing and choosing the right part, from the same sourced data behind the fitment tool.
How to Identify Your Bottom Bracket StandardWork out whether your frame is threaded or pressfit, then measure the shell to name the exThreaded vs Pressfit Bottom BracketsThe real trade-offs between threaded and pressfit bottom bracket shells, and why one is quBSA vs Italian Threading (and Why Italian Creaks)The thread specs that separate BSA and Italian bottom brackets, and the design reason ItalWhat Is T47 and Why It ExistsT47 explained: a 47mm threaded shell that fits fat 30mm spindles while keeping the reliabiCrank Spindle Sizes: 24mm vs GXP vs DUB vs 30mmThe four common crank spindle interfaces compared, with the exact diameters that decide whFitting a 24mm Crank in a 30mm ShellHow reducer bottom brackets let a 24mm Shimano crank run safely in a wide PF30 or BB30 sheHow to Measure Your Bottom Bracket ShellA step-by-step method for measuring shell diameter and width so you can name your bottom b