H&R’s sport springs for the 98-04 A6 Avant are crafted from a special 54SiCr6 spring steel to ensure premium quality and performance. Each spring is 100% tested before leaving the ISO9001-certified production facility in Germany. If you are looking for improved suspension performance or adjusting the ugly wheel gap, H&R’s sport spring is the solution. Experience superior handling and build extra traction. Making this upgrade offers an aggressive aesthetics while still riding comfortably. You can never go wrong with H&R.