Yokomo BD9 linear SLF front springs
Coming soon from Yokomo is their new line of linear SLF front springs for the BD9 touring car. Developed in cooperation with Axon, the springs offer a linear characteristic which will lead to a more aggressive steering feeling compared to the standard progressive front springs. In addition they are 1.5mm shorter, allowing for easier ride height adjustment when running smaller diameter tyres. The individually-marked springs come in 2.6 to 2.8 hardness and according to Yokomo they are also worth a try in the back of the car.
Source: Yokomo [teamyokomo.com]