I have been shedding parts off my '04 250x for some time now and my buddies love to give me crap about it. "Why don't you get a KTM?" or "Why didn't you just get the 250R?" It makes for good fun but....
First the R doesn't have:
Wide ratio tranny
18" rear wheel
larger tank with reserve
less rigid frame
green sticker (CA)
If you wanted to add half of that stuff to the 250R it would not be cheap. I look at the 250x as a bike with everything and you remove what you don't want or need. As for the KTM, I have the Honda and have to wear it out first. And this little bike is loads of fun in the woods.
At first I removed the easy stuff, headlight, battery, kickstand, odometer. All at no cost and only time invested. Hey this is my only hobbie. I don't ever ride after dark and I know how far we are going. If I am going to an unfamiliar area it just takes a few minutes to put in the headlight and odometer. Also, I ride in the woods and there is always a tree to lean my bike against. I think I could tell the difference in the weight even if it is phsycological. Now the idea of losing body weight is a great one which am always striving to do, but lets say you lose 10 pounds off the waist and 10 pounds off the bike. Now we are talking 20 pounds and who couldn't tell the difference with 20 lbs?
I am in the process of doing a piston replacement and valve work and decided to make the jump to take off the starter. I am never going to put the battery back in so why not. With the cylinder off it comes off quite easily. I machined a plug with a oring groove out of aluminum and plugged the hole left by the starter. I don't have an accurate scale but on the bathroom scale everything I have taken off it is 10-11 pounds. I have to make some bracket or spacer for the clutch mounting bracket. It was mounted by the starter bolts. I am looking forward to the phsycological benefits of the extra couple of pounds that the starter will lose. Now it is off the the gym. Good luck with the bike.