well they dont do much on my undercarriage in terms of protection... i have mud and grime everywhere on both sides of the "flappy things" so thats 4 flaps x two sides = eight dirty places
they dont look like they are very secure.... it looks like they were removed and then put back in a hurry / not properly....

i have a feeling my baby was wrecked at sum point.... ill take pics and post what i mean tomorrow (if i remember)