My truck cab cage was liftable by one strong person, or 2 normal people, so 75kg?? Dont forget not all of that is high up as the legs and diagonals run down. probably only 50% of the weight is above the COG, maybe 60% at a push so its really not a huge ammount, its the difference between driving with a full tank of fuel, or an empty one but at the top of the vehicle rather than the bottom if you get my drift!