Both my son and my daughter loved riding on our Peg Perego Desert Bike Challenger as well as our Peg Perego Ducati Motorcycles. Both were 12 volt and absolutely perfect starter bikes with training wheels. We eventually upgraded to the Razor MX650 which is 36 volts.
*The Peg Perego Polaris Ranger 24 volt version was our favorite battery operated ride on toy by far! Recommend a second battery so the fun doesn't have to end!