Midway through building a desert bike, I had an idea get into my head, and it wouldn't get out. It was a woods bike. A modern chassis with a small two stroke motor. I put the idea on hold while I finished the CB, but months later the CB was mostly done and the idea never stopped itching. No problem, right? Go buy a KTM 200. Only problem is they vibrate too much. Too much for me anyway. Ok, so buy a '98 Gasgas ec300. Those have a counterbalanced motor and are really smooth. Only problem is finding one. So, I'll have to build one. And this one's going to be built a lot faster than the CB was, for the sake of my sanity. I had a 1999 YZ 125 that was a nice light bike, but the motor was awful for trail riding. The first idea for a donor motor was a Gasgas 300 quad. It's the same motor as the ec dirt bike, but they kept the counterbalancer for a lot more years. Still hard to find, and couple I saw were expensive. For some reason it took me a while to figure out that pretty much all quad motors are balanced. That opened up a lot of options. In the end, the Yamaha Blaster was the donor. It's a 200cc two stroke, counterbalanced, air cooled motor. It was built pretty much unchanged from 1988 to 200something, so parts are easy to get. As a bonus, it's also a Yamaha which I figured would make matching things up easier. [Spoiler: it did.] Midway though researching this, I discovered that Yamaha did build this. It's the WR200, and imported to the US in '93 or '94. It lost a magazine review against the KDX200, and that was it. The major differences to what I built are that the factory bike was watercooled, more powerful, and heavier. I didn't take pictures while building, I was too fixated on just doing. So here are the results.