Installing a custom exhaust system on your Royal Enfield Continental GT 650 can be a great way to customize your ride and make it stand out from the crowd. However, it is important to be aware that custom exhaust systems can potentially cause more harm than good if not installed properly. An incorrect installation can lead to engine damage, reduced fuel efficiency, and excessive noise. It is therefore important to make sure that the installation is done correctly and that all necessary parts are in good condition. Additionally, it is important to check local laws to make sure that the exhaust is not too loud for the area you live in.