Here's the situation....my daughter is 14, 5-4, and is currently riding a TTR125L that I've modded out (YZ85 forks, BBR carb, FMF exhaust, BBR frame cradle, Protapers, you get the idea) and it's just not enough 'bike' for her....size, it's just fine, but she's complaining it's 'gutless' and 'slow'. Yup, she's picking up the pace. Now, I'm torn two different ways. Nobody really makes a serious 4 stroke bike in this size for serious trails/enduro use (except the CRF150R), and all the smokers are MX-bikes. So, I'm going to make my own mini-smoker-single-track machine. It's either going to be a KX100 that I KDX-ify, or a KTM 85SX that I XC-ify. I'm torn two ways, and am looking for some advice from anyone who was woods-ify-ed a KTM. I'm really leaning towards the KTM for numerous reasons, the hydro clutch being one, and the other being it's a much more modern machine. I've found locally that both machines of similar vintage and condition are about the same price, so they're equal there. As it stands, my list would be Cycra Pro-Bend handguards oversize fuel tank, a good coverage skid plate, a pipe guard, rad braces (none available for the KX though), FMF Q series silencer and a flywheel weight. Steahly lists a 7oz for the KTM, and an 8, 10 and 12 for the KX. My concern is, will 7 oz be enough to tame the KTM down for serious single track use? Anybody have some real-world experience with one?