A good option might be a Suzuki DR-Z and a set of supermoto wheels from East Coast Wheels. I think you can get a front brake conversion kit from them, too. So all you'd have to do to change from street to dirt would be the wheels and possibly a spacer for the front brake caliper. Your speedo will be off, though, since the front supermoto wheel is smaller.
You can find tons of info on DR-Z conversions on www.thumpertalk.com.
I just got a used DR-Z as a second bike for city riding (I live in NYC), and I love it. I'm too lazy to mess around with changing wheels, so I'm just keeping it standard for now. That's working pretty well, and the skinny tires make skids and backing it into turns easier.
You can find tons of info on DR-Z conversions on www.thumpertalk.com.
I just got a used DR-Z as a second bike for city riding (I live in NYC), and I love it. I'm too lazy to mess around with changing wheels, so I'm just keeping it standard for now. That's working pretty well, and the skinny tires make skids and backing it into turns easier.
