Race Tech's Dual-Chamber Pressure Springs improve overall plushness on braking and square egde bumps. Also can help to reduce mid-stroke harshness. Our Pressure Springs fit both Showa and KYB. Follow these guidelines and compare to the stock rate. Pressure Springs Available FRPS 261010 - 1.0 kg/mm FRPR 261014 - 1.4 kg/mm FRPS 261018 - 1.8 kg/mm FRPS 261022 - 2.2 kg/mm