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 boots fit my crankset? Will SRAM Eagle work on my bike? I want to convert my hubs/wheels. What end caps will work? What items are excluded from discount codes? What size shock do I need for my bike?