HKS SUPER SOUND MASTER BACK BOX - JQR40102020 Please be aware this part is used, previously fitted second hand item. There may be some cosmetic scratches and or marks. Please view all images. All parts are supplied with a minimum of 3 month Guarantee (Please view our Terms of Sale) The information below shows details of the donor vehicle. This is to be used as a guide only. Any mileage information shown is not guaranteed.