Aprilia buried their competition with the 2006 update of the RS125. With specifications and looking like a much larger supersport, it was the beginner's dream machine.
With the visual template of their 1000cc machine, the 125cc two-stroke single doesn't disappoint with 28 hp. A factory power kit was available for the racetrack. The powertrain is brought into the modern age with water cooling, oil metering, and a 28mm Dell'Orto carburettor. The chassis has been Aprilia's perennial claim to fame, the 2006 alloy twin-spar weighs just 21.5 lbs., and has matching banana swingarm. Though a single front brake is all that's required, it's a 320mm disk with 4-piston radially-mounted caliper, along with a 220mm rear. The full fairing carries dual halogen headlights and Aprilia's digital-plus-tach dash.
Boasting California title and just 520 miles, this RS125 looks showroom ( maybe a showroom in Europe or Asia ) in the just enough to make you want more pictures. I'm not a tail-tidy fan, but this bike calls for it - nice to have the stock parts, though. The owner has completed the best part of the power kit with an Arrow exhaust and has these comments in the eBay auction:
2006 aprilia rs 125 in excellent condition has upgraded arrow exhaust and bike has been properly jetted runs and brakes like a champ running on motul 710 injector oil Clear california title with current registration.
With rave reviews, the RS125 did well even priced 1/3 higher than the market at the time. The buy-it-now is up there as well, though a great value for the rarity and condition. The accommodations and performance will likely surprise all riders happily, S-M-L if not XL...