No 50cc motorcycle can indefinitely take the kind of abuse which is routinely dished out by your average teenager, but the Aprilia RX50 is likely to withstand more cack-handed riding than most two-stroke rivals. It might even survive attempts at `tuning', which is usually carried out by imbeciles who haven't had their Ritalin that day. If you can find an unmolested Aprilia RX50, then it will last 10,000 miles without major problems.