This kit contains a range of springs suitable for tuning Forge Motorsport valves FMDVFSITVR, FMFSITAT, FMDVR14TSI, FMDVATSI, FM207V, FMDVR56A, FMDVK04D, FMDVK04S.Four springs are included within the kit, coloured coded green,yellow,blue, red. Depending on the supplied original fitment this represents an increase of 25,50,75 and 100%.
