Powerflex Black Series bushes are for Track and Motorsport use, but do not come with the lifetime warranty offered to their softer Road Series products. Due to their construction and material they are specifically designed for Track / Motorsport use, they are harder and more durable and are for this purpose. Black Series bushes mostly come in the colour, Black, which is their highest Shore Rating (hardness).\n\nVehicle Fitment Information (Compatibility):\nWe include vehicle fitment Compatibility on many of our Powerflex listings but please note this information is to be used as a guide only. Our listings contain additional fitment notes and vehicle specific information in them, so please read all the information in the description before making a purchase. If you have any further doubt, please feel free to contact us for assistance. There are numerous factors that come into play when buying car parts, but with our knowledge and expertise, we will help you find the correct items you .