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 Fox Fork and Shock Upgrades and Service Parts **International Shipping Services Unavailable Due To COVID-19** How do I choose the correct size stem?