If you need to replace your Sigma shifter plastic slider, please see product image for comparison before selecting product. The plastic slider replacement part will not fit with your front to back metal plates if you order the wrong thickness. There are three possible thicknesses, "thin" .261" and "thick".297" and .312" The .261" setup consists of two identical thickness plates. The .297" setup consists of one thinner and one thicker plate. The slider may have a ".300" stamped below a part number. The 2019-2020+ .312" setup consists of one thinner and one thick plate. The slider may have a ".312" stamped below a part number.
