The bottom bracket ensures that your crank rotates smoothly in the frame. In the narrower sense, there are no specific mountain bike bottom brackets, road bike bottom brackets or gravel bottom brackets; however, different manufacturers each set their own priorities with regard to dimensions or use, e.g. with smooth-running or dirt sealing properties. Shimano, SRAM or FSA, for example, offer bottom brackets that encompass a wide range of different uses, sizes and dimensions. Ceramic Speed, Campagnolo or Rotor are more specialised in road bike and gravel bike bottom brackets, while brands such as Hope, Race Face or Reset Racing are particularly popular for (e-)mountain bikes. Our brand filter can help you find exactly what you're looking for. In any case, it’s important that you find the right bicycle bottom bracket for your frame, as there are big differences between many of them. Read further and discover more.

All Bottom Brackets

SRAM DUB BSA Bottom Bracket

Shimano Ultegra / FC-CX70 / 105 SM-BBR60 Hollowtech II Bottom Bracket

Shimano BB-UN300 Square Taper Bottom Bracket

SRAM GXP Bottom Bracket

Shimano Deore / Alivio SM-BB52 Hollowtech II Bottom Bracket

SRAM DUB Pressfit MTB 41 x 89.5-92 mm Bottom Bracket

Shimano SM-BB72-41B Hollowtech II Press Fit Bottom Bracket 41 x 86.5 mm

Shimano BB-MT800-PA Hollowtech II Pressfit 41 x 89.5-92 mm Bottom Bracket

Shimano Deore BB-MT501 Hollowtech II Bottom Bracket

Shimano XT / SLX BB-MT801 Hollowtech II Bottom Bracket

Shimano XTR SM-BB93 Hollowtech II Bottom Bracket

Shimano BB-ES300 Octalink Bottom Bracket

Shimano BB-RS500-PB Hollowtech II Pressfit 41 x 86.5 mm Bottom Bracket

Shimano Tiagra BB-RS501 Hollowtech II Bottom Bracket

Shimano 105 BB-5500 Octalink Bottom Bracket

SRAM GXP Pressfit 41 x 86.5/92 mm Bottom Bracket

Hope Stainless Steel MTB Bottom Bracket

Shimano BB-MT500-PA Hollowtech II Press Fit Bottom Bracket 41 x 89.5-92 mm

Shimano Dura-Ace BB-R9100 Hollowtech II Bottom Bracket

Shimano SM-BB92-41B Hollowtech II Press Fit 41 x 86.5 mm Bottom Bracket

Hope Stainless Steel Bottom Bracket for 30 mm Axle

Hope Stainless Steel Pressfit Bottom Bracket 41 x 30 mm

Shimano Saint SM-BB80 Hollowtech II Bottom Bracket

Shimano SM-BB71-41A Hollowtech II Press Fit 41 x 89.5/92 mm Bottom Bracket

Our Bottom Bracket Highlights

bc Insights

BSA, Press Fit, DUB: Which bottom bracket do you need exactly?

Once you have determined how you’ll use it, you need three pieces of information to find the bottom bracket for your bike:

Assembly Dimensions
Shell Width (also: over locknut dimension)
Crank Axle Type

We have practical filters for all three parameters to make your search easier. We have written a detailed blog post on how to find out exactly which measurements you need. There you will not only learn everything about standards and compatibilities, but also get important tips on bottom bracket installation.