KTM 950/990 specs have varied over the years depending on the year and the model. Here are some for a 2013 KTM Adventure R. http://www.2013ktm.com/990AdventureR.html. The difference in travel compared to F800gs is only 15mm, but ground clearance difference is 2" compared to what you measured unladen. I think that if you plan to routinely ride your bike at speed over rocky terrain, where two inches of ground clearance is all that important. Buy a different bike. Can you do it? sure. Touratech and others have built race bikes out of the F800gs. http://www.touratech-usa.com/Adventure/Blog/BcGTXA/Touratech-Racing-s-F800GS-Enduro-Bike Personally I don't think it is all that practical from a financial point of view. If you are a DIY, strap on some longer forks and a shock. There is enough tube overlap in the Marzocchi forks to use longer travel donor cartridges and springs. Heavier springs results in less sag. You will gain some ground clearance, just doing that. Did you know a 18" rear rim/tire is taller than the stock rear wheel? I have a reinforced polymer skid plate that is a molded to the contours of the engine that gives me at least a 1/2" more clearance. It is a combination of things. You seem fixated on suspension and ground clearance. Don't forget that for your money, a KTM provides more HP.