I just had my truck Line-X'ed under the rails. Everyone that sees it complements the great work the shop did. Got it with the "X-Tra" to keep it nice and shiny as well. One of my best investments so far, as it makes the truck look alot cleaner. Alot better than that old crappy plastic drop in cover.
LINE-X: Polyurethane/polyurea blend, uses a heat/high pressure application system (for better adhesion and a more uniform looking final texture), harder at Shore D 45, dries in 4 seconds (thus follows the bed’s contours much better), cures in 24 hours. Several UV products are available: Ultra Shield, Nason, or Xtra. All are one-time applications, Xtra is the best (made by Dupont only for LINE-X, contains a Kevlar micro pulp for extreme durability). LINE-X dealer have to become "certified" first before they can sell Xtra. Not all dealers are certified yet. LINE-X has a limited lifetime warranty, valid nationwide (about 600 dealers).
Speedliner (and Superliner): Solvent based brushable polyurea paint, like marine paint. (Rhino and LINE-X contain no solvents.) You mix one gallon of resin with one quart of activator and brush it on, roll it on, or use a hopper gun. Dry time is a few hours, cures in 72 hours. Since polyurea alone does not have good adhesion properties, Speedliner and Superliner must first apply an adhesive primer so that the product will stick to the bed. (Rhino and LINE-X do not need a primer.) Some dealers use non-fading pigments, some don't, you need to inquire with your specific Speedliner dealer. The solvent in Speedliner is ethyl acetate, which is EXTREMELY dangerous, the vapors alone are literally explosive. Speedliner's website states that after 2,000 hours (that's less than 3 months), the bedliner can lose up to 20% of its gloss. Speedliner's warranty is only with the dealer that sprays it.
LINE-X with Xtra:
These are the only two pics I have of Speedliner, which was applied to the rockers, flares, and steps. Notice the fading and loss of gloss:
A forum community dedicated to GMC and Chevy full size owners and enthusiasts. Come join the discussion about Silverados, Sierras, and other full size trucks performance, modifications, suspension, lift kits, tires, maintenance, and more!