some Aprilia 125 information
The Aprilia 2-stroke 125 is made for the racetrack and is also street legal, and I have seen a company renting them for people vacationing at Panama City, Florida. Aprilia is also coming out with a 4-stroke 125 with less power, but a cleaner exhaust and likely more reliability:
http://www.topspeed.com/motorcycles/motorcycle-reviews/aprilia/2010-apri...
http://www.youtube.com/watch?v=3Yp-cRbyiXI&feature=related
http://www.motorcycle.com/shoot-outs/moriwaki-md250h-vs-aprilia-rs125-sh...

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