Trilogy – home page content New Trilogy Acoustic Vinyl for Jeep Sierra Offroad now offers the heaviest vinyl on the market for the 2003-2006 Wrangler TJ. TRILOGY Acoustic Vinyl is a 45 ounce heavy weight two ply composite designed to reduce noise at highway speeds. Leave a Reply Cancel ReplyYour email address will not be published. Save my name, email, and website in this browser for the next time I comment. Δ