Pololu Idler Wheel

If I want to use these wheels on a project:
pololu.com/catalog/product/1087

and I only want to use 2 motors, is there an idler version of those wheels for the front of the robot?

Hello.

We do not have an idler version of the Pololu 32mm wheels. However, we do have our Pololu ball casters that can be used for that application. Our Pololu 3pi Robot is a great example of a typical configuration when using two wheels and a ball caster:

-Brandon