The Graphite Front Brace really helps to adjust front suspensions flex setting. Soft - the graphite brace is not mounted towards the front graphite arm - This option makes the automobile initially less responsive but will give you more mechanical grip. Best suited for low grip carpet conditions and asphalt. Moderate - the graphite brace is mounted toward front side graphite brace by little articles that improve the brace and makes the leading suspension stiffer - Gives good stability between initial response and mechanical hold. Most suitable choice for some conditions. Stiff - the graphite brace is directly attached to the front graphite arm - Makes the car the absolute most responsive, but also removes a bit of mechanical hold. Best suited for high bite conditions. CNC-machined from 2.5mm high-grade graphite material