Located in Acworth, Georgia is a 1999 Aprilia RS50 with a 200cc motor. Normally, replacement motors and motor swaps aren't something we share on RSBFS but I'm all for putting a big--relatively--two stroke in a street bike. This RS50 is now powered by a Kawasaki KDX200 which gives out around twenty-seven horsepower. The bike is titled and registered as a moped (as a 50cc bike). The bike comes with a fitted Penske shock with remote reservoir and front suspension set-up. The asking price is $2,000. I don't doubt this bike is a hoot and all the work has already been done on it. If you're interested in this type of bike, see it on Craigslist here.
And a couple videos (the sound is very low):