This is the Essentials bearing kit by Avid RC for the Team Associated B74.
The Essentials kit removes the bearings that don't typically need replacing such as the (4) 4x7x2.5 and (4) 5x8x2.5 bearings in the steering. You can always make a custom kit by shopping for the bearings individually but the Essentials kit quickly saves you money.
8- 10x15x4 Revolution
6- 5x10x4 Revolution
4- 5x12x4 Revolution