Driver's licenses, other than licenses issued under the New Mexico Commercial Driver's License Act, may be issued with one of the following endorsements:
Endorsement Authorizes Licensee to Operate
Z Any two- or three-wheeled motorcycle with an engine of less than 50 cubic centimeters piston displacement.
Y Any two- or three-wheeled motorcycle with an engine of at least 50 but less than 100 cubic centimeters piston displacement.
W Any two- or three-wheeled motorcycle with an engine of 100 or more cubic centimeters piston displacement.
N.M. Admin. Code § 18.19.5.31