This seat padding has been designed with the karters comfort in mind. Its universally patterned pieces have been designed to fit the unique shape of karts seats. The back padding has been designed to allow for a gap to accomodate your spine. In addition, holes are conveniently located to allow for the fixing of 1kg, 2kg and 3kg lead discs. These hole diameters are made to fit our 8mmx33mm CSK washers. The seperated and ideally shaped side padding pieces allow you to choose how much hip or rib padding you require. The lower padding is structured to align within the flat bottom of current kart seats.