This is a protector that is not seen once installed and sits under the plastic that sits under the jump ramp. The jump ramp plastic is one that is commonly broken due to the ball being flipped from the mid playfield lhs flipper when shooting under the volcano when the ball catches a little air and knock the plastic probably at it's thinnest and weakest point.
The protector plastic is one that has a few features designed in to protect the congo plastic, including a cut out around the front scoop so not to stress the congo plastic and crack it from bending up, and it has 2 drop down reinforcement sections that sit either side of the SS ball diverter piece which keep both plastics straight and to reduce twist stress on the 2 only mounting points. On the playfield side the drop down extends out to support all the plastic and is scalloped to allow a ball to still pass through but strengthens up this weak point if there is a impact. The protector plastic also has 2 holes cut out allowing light to shine through and light up the gorillas faces. Lastly at the back of the plastic is a mini post so you have 2 options on install: 1 is to mount the mini post to the congo plastic as usual and the protector plastic has a recess so everything still sits flush or you install the screw through the protector plastic and the congo plastic and tighten the mini post - which firms up the congo plastic and protector plastic now securing at 3 points instead of 2 and reduces the risk of cracking.
It must be noted that the part was to big to qualify for the polished finish so a matt / grainy finish is only available but since it is not seen this won't be a issue. This has been test printed and fitted using a 3D home printer and the Shapeways option will look better.