I'll buy the SL350 going up ( since most were destroyed shortly after produced ) but CB's & CL's not so much. Of course it's nearly impossible to list all the classic bikes that are rising in value. It all comes down to supply and demand. Further, long running models like the CB750 vary widely in potential. Your K5 is not worth close to a KO and never will be due to supply. I'm frankly surprised the 2 strokes are not on this list as they are literally on fire these days. Not mention I haven't seen a decent AJS, Matchless, early XS-650 ( 70-72 ) CB500/4 ( which is a far superior bike than a 750 ) for sale in ages.
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