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 Installing Sram Eagle DUB Crankset and Bottom Bracket What boots fit my crankset? What size bottom bracket do I need? Which freehub body do I need for SRAM Eagle Cassette? What SRAM DUB Bottom Bracket do I need?