Neuspeed Race Springs provide the ultimate mix of lowering and ride quality. Neuspeed Race Springs increase handling drastically. Neuspeed ensures each Race Spring's Quality by using Chrome-Silicone/Vanadium Steel which is heat treated and shot-peened after winding. This allows all Neuspeed Race Springs to be ISO 9002 Certified. Because Neuspeed Race Springs Lowering Amount is borderline-excessive, you might have to roll the fenders if you have larger than stock wheels. Plan on Buying Shocks in a couple of months also. Neuspeed Race Springs are designed for serious driver. Installation times average 2-4 hours with proper tools.