909 Speedster Short Exhaust System - BlackThe 909 Speedsters have a unique blend of performance, sound, and style. Like all of Cobra's Speedsters, these feature the PowerPort cross over which delivers class leading power; which is a critical feature when using such a short system. Uses the same internal construction as Cobra's short RPT system so you also enjoy the same premium sound. Rolled tips give a brawny look that is matched by the sound. Mufflers expand from 3" at the front to 3 1 2"