Bottom brackets are rarely seen and often forgotten, yet they are the most highly stressed bearings on a bike. A great bottom bracket should last as long as your bike. (How often do you overhaul or replace the wheel bearings on your car?) SKF is the world leader in bearings, and they’ve applied their full know-how to these bottom brackets. For you, that means spending less time in the workshop and more time on the road. SKF bottom brackets come with a 10-year warranty that includes the bearings.