What size bottom bracket do I need? Bottom brackets can be very tricky. Please read our blog post on Bottom Brackets, and if you still are not sure reach out to us for more help : ) Didn't find what you're looking for? Contact Us Related articles Which freehub/driver body do I need for SRAM Eagle Cassette? I need to install my Threaded SRAM DUB Bottom Bracket. What tool do I need? What items are excluded from discount codes?