A completed Application for Texas Title and or Registration (Form 130-U); Applicable fees; Evidence of ownership, as defined in the table below. The form consists of the significant vehicle, buyer, seller, and sale data, along with affirming signatures from both parties.Names of both the seller and the buyer; Detailed information on the trailer; Date of sale; Price of transaction. The Trailer is to be sold free and clear of any liens, encumbrances, or mortgages. Let's go over when to use a trailer bill of sale, what to include in the bill of sale and where to get an official template.