Kivra class

The Kivra class was a Klingon runabout class fielded in the early 25th century. It was designed as a counter to the fielded by the Federation.

One unit was used by Klingon pirates, destroyed by the efforts of three fighter pilots.

Production notes
Although in Star Trek Online, the Kivra-class was named Toron, it appears that the already appeared canonically at some other point.

External link

 * Kivra-class shuttle on Star Trek Online wiki