YT Decoy Mk2 EP8 “Core” series Alum Motor Guard. Will fit the YT Decoy models that utilize the plastic motor guard (see screenshot from YT website in the photos) The guard is laser-cut from 11ga alum, and formed to fit over the YT Plastic guard, as an additional layer of protection from rock strikes. They are available with a plain, slightly brushed alum finish, no anodizing. There may be very slight scuffs from counterboring the slots, handling, and chamfering the leading edge. The guard will fit seamlessly with the 540 battery, and will also work with the 720 by shaving some material off the bottom battery cowl (see 5th Photo). Email me if you have questions on how to do that. It will fit all Core models of the YT Decoy with the EP8 motor, and simply attaches directly over the existing plastic guard using the longer screws provided. It should also fit the Core models with EP801 motor as well. I recommend using a small dab of blue threadlocker on the screws and tightening the screws snug, but not overly tight. The guard will need to 'breathe' a bit as it takes the rock strikes. **While the guard is sturdy, it is not completely immune to deformation from hard rock strikes. With enough deformation the plastic guard underneath may also become damaged. In the event this occurs, simply remove and re-shape the aluminum guard with a hammer/chisel over a vise or other means of support, and smooth any gouges or burrs with a hand grinder/file. Additionally, repair the plastic guard with a plastic welder or strong adhesive - or replace with new one if repair is not feasible**