Search results
Learn everything you need to know about bottom bracket standards, types and compatibility in this comprehensive guide from BikeRadar.
Find the bottom bracket size and crankset compatibility for various bicycle models and brands. Compare different types of bottom brackets, spindles, chainlines, and chainring clearances.
The two major dimensions that differentiate bottom brackets of similar types are the shell width and spindle diameter. Hopefully, we can help clarify some of the more common bottom bracket sizes so that upgrading your cranks can be a simpler process.
To accurately determine the bottom bracket standard in your frame, it is best that you remove your crankset, and any installed bottom bracket cups or bearings. Then measure both the inner diameter and width of your frame's bottom bracket shell. The chart below lists most of the current bottom bracket standards found on today's frames.
Nov 15, 2023 · Recently, more and more bike manufacturers have been returning to the BSA threaded bottom bracket standard because servicing and replacing bottom brackets is a lot simpler, especially for home mechanics.
Bike bottom brackets are divided into threaded bottom brackets, press fit models, and adapters/converters. Cheaper bikes are usually fitted with threaded BBs; more pricey bikes—especially high end ‘racing’ bikes—use press fit.
Dec 13, 2023 · With modern bikes, it's generally most straightforward to check the manufacturer's specifications directly rather than measuring, which requires specialized instruments. Below is a detailed breakdown of the most common bottom bracket frame types, aiming to provide a clearer understanding.
