For the person who wants a subtle custom appearance with all the benefits that a Flowmaster Cat-back exhaust system provides. S.O.R. (Single out rear) systems are the perfect choice. As a Force II system it produces a mild interior and exterior tone, and is suited to customers looking for efficiency improvements without too aggressive of a tone. Especially recommended daily drivers. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.