This exhaust is great for ATV enthusiasts who want to enhance their riding experience. It's perfect for those weekend off - road adventures, giving your ATV a more powerful and engaging sound. The target users are Honda TRX350D owners from 1987 - 1989 who are looking to upgrade their stock exhaust. It directly replaces the OEM muffler, so there's no need to worry about complex installation. As for technical details, it's designed to fit the exact dimensions of the Honda TRX350D's exhaust system, ensuring a seamless fit.