This is our ZZP 3" cat back exhaust for your LSJ/LE5.

• Stainless Steel
• Mandrel Bent
• Optional Resonator (recommended for supercharged or N/A builds)
• Polished 3 Chamber muffler
• 1/2" Hangers in all OEM locations
• Includes all required clamps, gasket, & bolts
• Direct bolt in when used with our 3" exit downpipe

During the testing phase we setup an RTA to measure db levels at various frequencies and rpm ranges . Time consuming to say the least but in the end we came up with a solution which we now manufacture in stainless. Remember that this is a 3" exhaust, it will be much louder than stock. Also it will be even louder if you do not chose the resonator option and run a catted downpipe. This is a very good sounding exhaust when you order it with the resonator and muffler options. However, we recommend our 2.5" catback for most builds, found here. 

Fits the 2005-07 2.0 (LSJ), 2005-2010 2.2 & 2.4L Cobalt's; also fits 07-10 Pontiac G5.

July 2025 update: We have updated our muffler section with out new double wall muffler tip for a more modern look. New tip featured in product photos. Muffler delete is currently our old style. 

*UPS shipping only