N.J. Stat. Ann. § 39:3C-11

11. In accordance with the provisions of P.L.1973, c.307 (C.39:3C-1 et seq.), whenever there is a change of ownership for which a registration certificate has previously been issued, the new owner shall apply for a new certificate. The new owner shall set forth the original number issued in the application accompanied by the old registration, if available, and with the required fee submitted to the commission, for registration. The new owner shall demonstrate to the commission a notarized bill of sale, assignable certificate of origin, or other formal proof of ownership deemed acceptable by the commission when transferring ownership or selling a snowmobile, all-terrain vehicle, or dirt bike.