Yes, you can generally use 93 octane gasoline in your motorcycle, as long as the manufacturer's recommendations allow for it. Many motorcycles are designed to run on unleaded gasoline with an octane rating of 87 or higher.
The manual will provide information on the appropriate fuel to use, including the minimum octane rating and any specific fuel requirements.
Using gasoline with a higher octane rating than recommended usually does not cause any harm to the engine, but it may not provide any additional benefits in terms of performance or fuel efficiency. Additionally, using a lower octane rating than recommended could potentially lead to engine knocking or performance issues.
Always follow the manufacturer's guidelines to ensure optimal performance, efficiency, and longevity of your motorcycle's engine.