This is an interchangeable resonated mid - section from ISR Performance, specifically designed for the SERIES II exhaust systems of Nissan 240sx models from 1989 to 1994 (S13). Note that this is just the resonated mid - section, not a complete exhaust system, and it only works with SERIES II exhaust systems, not older models. ISR Performance's new Series II exhausts have a modular design. You can easily swap between different Series II mid - sections (resonated and non - resonated), as well as the new Series II EP Single, Series II EP Dual, and Series II GT Single rear sections according to your chassis. What's included in the package? You'll get 1 resonated mid - section and 1 gasket and hardware pack. Remember, all ISR Performance products are for off - road use only. They are legal in California only for racing vehicles that will never be used on public highways, registered, or licensed for road use.

Using your ISR Performance Series II Resonated Mid Section is easy. First, make sure your vehicle is a Nissan 240sx from 1989 - 1994 (S13) and has a Series II exhaust system. Remove the old mid - section and install the new resonated one using the gasket and hardware pack provided. As for maintenance, check the connections regularly to ensure they are tight. If you notice any rattling or loose parts, tighten them up. Keep the mid - section clean from dirt and debris. Remember, this product is for off - road use only. Don't use it on public highways, and in California, it's only legal for racing vehicles that won't be registered or licensed for road use. If you have any questions, feel free to contact our customer service.