ZZP 3 Chamber Straight Flow Mufflers Stage Kits STS-V Models w/ Heavy Duty

STS-V Models w/ Heavy Duty Brakes - J56 & STS-V Supercharged Models Rear

Series III - 04-07 Grand Prix

Temperature Range:- 50 deg F to + 350 deg F

Designed to improve throttle response and engine sound

and a couple others

ZZP 3 Chamber Straight Flow Mufflers Stage Kits STS-V Models w/ Heavy DutyIncludes: (2) Mufflers with brackets and tips (2) Clamps They are a 3 chambered full stainless steel constructed muffler that replaced the "Flopro" muffler that used to come with our 3800 cat back exhausts. They are noticeably quieter with substantially less drone. These will install in minutes and use the factory rubber hangers when you are attaching them to a ZZP catback. They are center in and center out design so they will not work as stock