It's important to note that the performance of an exhaust/silencer can vary depending on various factors such as design, materials used, and the specific bike model.
In general, changing the exhaust/silencer of a motorcycle like the Royal Enfield Thunderbird 350 2014 model can potentially have an impact on its performance. Aftermarket exhausts are often designed to improve exhaust gas flow, reduce backpressure, and enhance the overall sound of the motorcycle. These modifications can sometimes result in a slight increase in horsepower and torque, as well as a change in the exhaust note.
When it comes to comparing different exhaust/silencer brands like Red Rooster, Khalidaro, Wild Boar, and Goldstar, it's important to consider individual reviews and user experiences, as they can provide more specific insights into the thump and performance characteristics of each brand. You may want to explore online forums, motorcycle communities, and customer reviews to gather more information and opinions from riders who have installed these aftermarket exhaust systems on their Royal Enfield Thunderbird 350 motorcycles.