The recommended RPM (revolutions per minute) limit for mileage maintenance of a Duke 250 motorcycle may vary depending on several factors, including the manufacturer's specifications, the specific model year, and any updates or modifications made to the bike. It is essential to refer to the owner's manual or consult with the manufacturer or a qualified service technician for the most accurate and up-to-date information.
Typically, maintaining a moderate and consistent RPM range during normal riding conditions can contribute to better fuel efficiency and overall mileage. As a general guideline, many riders aim to keep the RPM within the mid-range during regular commuting or highway riding. For the Duke 250, this could mean operating in the range of 4,000 to 7,000 RPM in various gears.
The best approach is to follow the manufacturer's recommendations outlined in the owner's manual or seek advice from an authorized dealer or service center. They can provide specific guidelines and advice based on the particular model and any updates or modifications.