The ornamental design for a fifthwheel to goosenecktorsion suspension coupler, as shown and described.
FIG. 1 is a front isometric view of the fifth wheel to gooseneck torsion suspension coupler;
FIG. 2 is a rear isometric view of the fifth wheel to gooseneck torsion suspension coupler of FIG. 1;
FIG. 3 is a bottom isometric view of the fifth wheel to gooseneck torsion suspension coupler of FIG. 1;
FIG. 4 is a right side view of the fifth wheel to gooseneck torsion suspension coupler of FIG. 1;
FIG. 5 is a left side view of the fifth wheel to gooseneck torsion suspension coupler of FIG. 1;
FIG. 6 is a front view of the fifth wheel to gooseneck torsion suspension coupler of FIG. 1;
FIG. 7 is a rear view of the fifth wheel to gooseneck torsion suspension coupler;
FIG. 8 is a top view of the fifth wheel to gooseneck torsion suspension coupler; and,
FIG. 9 is a bottom view of the fifth wheel to gooseneck torsion suspension coupler.
The broken lines depict portions of the fifth wheel to gooseneck torsion suspension coupler that form no part of the claimed design, and are for illustrative purposes only.