Why are true dualsport bikes getting heavier and less powerful over time? "True" being defined as the longer maintenance interval bikes meant for 50/50 type riding vs. the more race oriented bikes that come with tags. It would seem that with technology they would get lighter, stronger and more powerful over time. Has anyone else noticed this? Here are a few quick comparisons from internet data: 1984 XT 250 wet weight 275 17 hp 2008 XT 250 wet weight 291 22 hp (Note - horsepower is better in newer one for yamaha) (Note: 2004 XT 225 wet weight 265) 1986 XL600R - 321 Wet Weight. 43 hp 2012 XR650L - 346 Wet Weight 35 hp XR 250L - 250 dry weight 28 hp (claimed) CRF250L - 295 dry weight 18 - 22 hp Note - WR250 R - 295 wet weight, more horsepower - But, still heavy for a 250.