75 Pa.C.S. § 7712.13: Exemptions.

The provisions of this subchapter relating to procedures for perfecting, assigning and satisfying security interests do not apply to:

(1) a lien given by statute or rule of law to a supplier of services or materials for the snowmobile or ATV;

(2) a lien given by statute to the United States, the Commonwealth or any political subdivision of the Commonwealth;

(3) a security interest in a snowmobile or ATV described in 13 Pa.C.S. § 9311(d) (relating to perfection of security interests in property subject to certain statutes, regulations and treaties); or

(4) a snowmobile or ATV for which a certificate of title is not required under this subchapter.