By all means express your own opinion of whatever bike you choose to ride. But to state that a particular bike ( be it a KLR or any other) is catagorically 'not capable' is an opinion and not an accurate reflection of what the machine is capable of. Now , as to what makes me personally think a KLR is capable of a real '77'mph on the highway, the answer is simple. Because it is my choice of a ride, fully loaded with camping gear too and has been for tens of thousands of miles and many 800 mile plus days at those speeds. The speeds and distances covered and viewed (Both odo and calibrated cycle computer that have been verified with a GPS) have indicated that and for me is now more comfortable than my Beemer for most long rides I do.