Recently purchased an SKF seal kit for my CRF250L (2015). The kit # is 'KIT-43S' - it came with a dust seal, oil seal, and this plastic spacer.
There is a little paper in the box that says "optional spacer to be added according to fork type fitted" - from the diagram looks like it installs between the oil seal and the stock OE metal spacer. Wondering if this is something I should be using with my bike??