Additional dampening for flat platforms. Please refer to the exploded view in the gallery for installation instructions. The kit includes the following parts: C, D, E, F-1, F-2

To not overtighten the screws – use just enough torque to stop holder from moving. If the locking washers are not enough, use a tread-lock agent to prevent the screws from getting undone. The rubber mats should not be compressed to let them do their job, i.e. to absorb the engine vibrations.