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 boots fit my crankset? Installing Sram Eagle DUB Crankset and Bottom Bracket What size bottom bracket do I need? What's the deal with Oval Chainrings? What SRAM DUB Bottom Bracket do I need?