I need to install my Threaded SRAM DUB Bottom Bracket. What tool do I need? If you have purchased a SRAM DUB threaded DUB bottom bracket, you will need this tool to install your bottom bracket. Park Tool BBT-79 Bottom Bracket Tool Didn't find what you're looking for? Contact Us Related articles What size bottom bracket do I need? Will SRAM Eagle AXS and Mechanical Drivetrains work on my bike? Which freehub/driver body do I need for SRAM Eagle Cassette? Installing Sram Eagle DUB Crankset and Bottom Bracket I want to convert my hubs/wheels. What end caps will work?