Originally Posted by Scrodzilla

You bought the right BB but to use it with Sram cranks you also need to buy the Phil Wood Sram/Truvativ adapter, which needs to be pressed in (like a cartridge bearing) on the NDS after the plastic dust cap has been removed. Installing the adapter will be tricky without using an actual bearing press.

https://www.philwood.com/products/bbpages/outboard.php

FWIW, if you ordered it directly from Phil Wood's site they would have pressed in the adapter for you had you specified you were using it on Sram cranks. The ones we order for the shop always come pre-assembled.