Shock does appear wrong, if you look at my pics the bolt housing is the same width as the shock body whereas yours is narrower than the shock body. Original shocks? And yes it looks like a spacer is needed
Not sure about the Koni being OEM or not, hopefully someone that speaks Sportster can chime in on that one......anyone?
Koni are not OEM. They are aftermarket. I am not an expert on this, but I think this may be the problem, as the aftermarket shocks are sold with one model possibly having multiple applications on different bikes. Works fine stock, but not with the lowering blocks...spacers are the go. TC