It has swept-forward single-spar wings, positioned lower than in the Ka 7, which allows for a large blown canopy providing a good all-round view for both pilots.

The 6 degree forward sweep of the wing allows the rear pilot to be seated near the centres of gravity and lift.

The fuselage is a welded steel tube structure with spruce stringers and fabric-covered overall, except for the nose, which is fibreglass.

[1] Landing gear consists of a non-retractable sprung wheel, mounted aft of the centre of gravity.

The original design featured a skid under the nose and tail, although on many K13s these have been replaced with wheels to make handling on hard surfaces easier.