Funny the Losi Eight RTR is 7.14 pounds.... I am sure this has to be with the engine and everything... I highly doubt they would weigh it with everything out. Here is the link... Check it out... http://www.losi.com/Products/Feature...rodId=LOSB0081 It doesnt give a weight for the race roller or the competition for some reason... but i would say that the Losi Eight is the lightest buggy on the market... Along with the 808... So it looks like 7.14 is lighter then the Hyper 9... An the Eight is a tank... Never breaks.. So it doesnt look like weight reflects much on durability as long as its weight is shedded in the right place...