Which models have that extra bolt in the top center of the primary cover? KRs, XRs? Some left side cases do, while others don't . . . does anyone know when they had that - and when they didn't ? This one doesn't have it . . . and what frame is that ? XRTT? Lowboy or Highboy?
Above: See how this "Racing KR" cover has the extra provision for the bolt in the center top? All the K-Models and KRs have a flange on the left case for this screw. Not always tapped 1/4-20, but it's there. The Sportsters don't have it - unless maybe an XLR has it?