99-02 KAWASAKI KX250: SDG Complete Seat Assembly As an industry leader in seat technology, SDG works with the fastest Supercross, Motocross, and off-road racers to develop products that not only look great on your bike, but offer you the same performance features used by the pros. Complete seat, ready to install (lighter than stock). Water-resistant, closed-cell foam (reduces foam breakdown). Durable, two-stage gripper seat cover with double-stitched, nylon-taped seams. Replaceable brackets on most models.