Want to get the most out or your exhaust for racing, but still keep it street legal? Here is an inexpensive way to do so. It allows you to manually open up your exhaust (using a cable control) to divert exhaust straight out without having to pass through your muffler and catalytic converter. It’s constructed from durable cast iron and can be brazed to pipes to ensure a leak free fit. It has a 2-inch inlet and outlet but can fit other size pipes using adapters and reducers (sold separately).