New linear SLF front springs for the BD9 touring car are available from Yokomo. In contrast to the conventional progressive front springs, the springs, which were developed in collaboration with Axon, have a linear feature that will make steering feel more aggressive. They are also 1.5mm shorter, which makes it simpler to change the ride height when using tires with smaller diameters. According to Yokomo, the individually labelled springs are also worth a try in the back of the automobile. They range in hardness from 2.6 to 2.8.