About BBSwapFinder
Bike component fitment: bottom bracket, headset, seatpost, axle
Bike-frame standards describe the frame, not the part you bolt to it. Start from your bottom bracket shell or crank spindle, or from the frame's headset, seatpost diameter, thru-axle or front-derailleur mount, and get the exact fitment to buy, whether it drops in, needs a specific bearing or needs an adapter, plus the traps that catch people out.
Dimensions are compiled from Park Tool and Wheels Manufacturing bottom bracket references, the Park Tool SHIS headset standard, White Industries and SRAM/Shimano crank and headset data, Sheldon Brown and BikeGremlin seatpost data, and BikeRadar road and mountain axle guides, cited on each page.
Shell, spindle, headset, seatpost, axle and clamp dimensions are quoted from published manufacturer and standards data, cited on each page. These are load-bearing parts. Measure your own frame before buying, because frames sharing a name are not always identical: confirm the shell width and bore, the headset cup and steerer, the seatpost bore, and the thru-axle diameter, hub width and thread pitch.
Operated by Westcountry Hosting Ltd.