The Highwaymen 4?

4. Who are the two remaining living members of this supergroup?

Kris and Willie

Willie Nelson and Kris Kristofferson

The ones who are still breathing.

willie nelson & kris kristofferson

R.I.P. Waylon & Johnny

The Great Kris Kristofferson and The Legendary Willie Nelson...I sure do miss Johnny and Waylon.

that's an easy one.
Kris Kristopherson
and
Willie Nelson

Willie and Kris

Willie and Kris are still living