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 Will SRAM Eagle AXS and Mechanical Drivetrains work on my bike? How wide should my MTB handlebars be? My order is passed the 45 day return limit, can I still exchange or return it?