Choosing the "best" chain sprocket for increasing performance on a Royal Enfield Classic 350 depends on your specific goals and preferences. Different sprocket combinations can affect acceleration, top speed, and overall rideability. However, it's essential to consider the potential trade-offs and how they may impact your riding experience. Here are a few factors to consider:
Sprocket Size: The Classic 350 comes with a stock sprocket size that is optimized for a balance of acceleration and top speed. If you want to increase acceleration, you can consider reducing the rear sprocket size or increasing the front sprocket size. This will result in quicker acceleration but may sacrifice some top speed. Conversely, if you're aiming for higher top speed, you can increase the rear sprocket size or decrease the front sprocket size.
Riding Conditions: Consider your typical riding conditions. Smaller sprocket sizes can be advantageous for stop-and-go city riding or hilly terrains where quick acceleration is important. On the other hand, larger sprocket sizes may be beneficial for highway cruising or long-distance touring where maintaining higher speeds is a priority.
Engine Stress and Fuel Efficiency: Changing the sprocket size can alter the engine's RPM range and potentially increase stress on the engine. It may also affect fuel efficiency. Be mindful that extreme changes in sprocket sizes can strain the engine and may require adjustments or upgrades to other components like the clutch or carburetor.
Suspension and Braking: Changing the sprocket size can impact the bike's overall dynamics. Smaller rear sprockets can cause the suspension to compress more under acceleration, affecting the balance and stability of the bike. It can also increase the workload on the rear brakes, potentially requiring adjustments or upgrades to ensure proper braking performance.
It's important to note that modifying the sprocket sizes can have legal implications, and some jurisdictions may have restrictions on altering the stock gearing. Additionally, altering the stock setup may void the warranty provided by the manufacturer.
To make an informed decision, I would recommend consulting with experienced mechanics or Royal Enfield specialists who can provide guidance based on your specific requirements and riding style. They can help you select the appropriate sprocket combination that aligns with your desired performance characteristics while considering the potential trade-offs and maintaining the overall reliability of the motorcycle.