Bumper. Left.4 WHEEL DRIVE. Rear. Right.4 WHEEL DRIVE. w/o Off Road Pkg. A component (mounted in the center of the Spring) which cushions the Spring as it is compressed. Rubber pad or block that contacts the leaf Spring when the suspension is over compressed. Coil Damper. Cushion. Dynamic Damper. Leaf. Seat. Stopper. SUB - Assembly,.