Borla 18-20 Dodge Durango SRT 6.2L V8 2.75in S-Type SS Catback Exhaust w/ BLK Chrome TipsThe search for the perfect exhaust system for the Dodge Durango SRT is over. BORLA gives you their take on how the Durango SRT should sound. This 2. 75" diameter Cat Back systems was developed with performance and sound in mind on the 392 HEMI engine. The S Type sound level delivers the distinct BORLA rumble and gives the Durango SRT the classic muscle sound without the drone. It contains a Merge X Pipe for increased performance and improved sound.