Generation 1 w/ the rounded frame were the lightest(416lb), most of them made 65-69 HP, torque is in 42-44 ft-lb range, and had carbs. The gen 2, angular frames, weight went up to around 425 lb, fuel injection and a couple of small changes to the engine bumped the power up to 68-72 HP, torque output was about the same. The Gladius and current SVF 650, have a steel frame engine changes are more extensive for friction reduction, emissions, and better midrange throttle response and weight went up also. I have owned both generations of the SV, standard gen1, S gen2, they are fun bikes, seat to peg distance a bit more roomy than a street, suspension is low budget, to keep the price down, but a shock, fork work, and some brake up grades help them out. If and when I find a nice gen1, I wouldn't mind owning another. Plus if you are wanting to start racing, these are a good bike to learn the craft on, they also make good track bikes, but everything you make up in the corners w/ one gets lost on a straight away to bigger bikes which can be frustrating. Also owned a Vstrom 650 but that's another story and this post is long enough.