This was taken off of "Thumper Talk", I put it here because I didnt want to start a new thread.
This is very interesting for sure and there will be alot of Orange denial over this!..........
"OK, the shocking results. I used the one tire on the scale method, it was repeatable, so it seems to be accurate. The scale has not been calibrated so use it as a comparison rather than "actual" weights. I put every bike I had kicking around the shop this morning to give a good overall comparison. It's funny this started as a Gas Gas question because there were interesting results all around.
03 RM250- full woods setup, skid, rad, disc, wraparound hand guards 1 gallon gas --- 252lbs
07 WR450- full woods setup, skid, rad, disc, wraparound hand guards, every weight saving mod possible besides removing starter, 1/2 gallon gas --- 266lbs
11 Gas Gas Nambotin 300- skid plate, no hand guards, etc, 1.5 gallons fuel --- 252lbs
07 KTM 300XCW- skid plate, no hand guards, etc 1.5 gallons fuel --- 252lbs
XR650L- stock besides oversize tank 3.5 gallons fuel --- 358lbs
05 RM100- handguards 1.25 gallons fuel --- 174lbs
07 WR250- stock 1 gallon fuel --- 260lbs
00 KTM50 SX- stock- 1/2 gallon fuel --- 93lbs
I weighed a gallon of gas at 8lbs on my scale
Like I said shocking results. I swore my WR450 weighed 50lbs more than my RM, on the trail it feels like even more, but the result was 20lbs!
Another shocker is how heavy my RM is, it feels feather light, but set up for woods it weigh's the same as a GAS Gas/ KTM. Those bikes had a little more gas, my bike has more guards so I would really say it's a wash on which is lighter.
So there you have it. A Gas Gas is no heavier than a KTM 300, and the GG comes with lights and linkage, and that big ass muffler. In fact, with woods mods a Jap 250 is no lighter."