Yup. Easton makes tubing as well as a few hardpoints like dropouts, a chainstay yoke etc., and Kinesis has a factory in Oregon I think. Kinesis is a manufacturer, so obviously they just decided to use Easton dropouts in much the same way I use Breezer or Paragon dropouts on my schtuff.

Oh, btw, Aluminium singlespeeds are a sin. Destroy yours immediately. Thank you.