Am drawn to reliability of XR. Yet 400 would need $ to upgrade power and has no liquid cooling...Why not spend that "would have been" power upgrade $ on 400 and instead buy a 650R and spend that $ on getting performance parts that also reduce the weight at the same time? Could put a smaller front sprocket to get more bottom end and "shorten" the already open country gearing. XR 400 (257 lbs) XR 650R (277 lbs) Granted, would have to deal with 2" longer wheelbase and probably a larger rake angle on the 650R. I suppose that the other manufactures use light materials or is it the honda just has a more "overbuilt" motor unlike the slender gearing disks on those KTM's? Any ideas? Places to secure 650R modification list to achieve the aforementioned? Thanks!