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 What size shock do I need for my bike? I want to convert my hubs/wheels. What end caps will work? Can I use live chat? How do I choose the correct size dropper seatpost? Rockshox Pike, Lyrik, Yari - What's the difference?