3-Inch Stainless Steel Cat-Back Exhaust System

The JBA 40-3027 cat-back exhaust system is engineered to enhance the performance, sound, and quality of your 2002-2009 Chevrolet Trailblazer, GMC Envoy, or Isuzu Ascender equipped with the 4.2L inline-6 engine. This system replaces the restrictive factory exhaust with free-flowing, 3-inch diameter, mandrel-bent stainless steel tubing. It terminates in a single rear exit featuring a 3.5-inch polished stainless steel tip with a chrome finish. This exhaust system is designed for specific applications, fitting the 2002-2009 Chevrolet Trailblazer (excluding the XL model), 2002-2009 GMC Envoy (SLT trim), and various Isuzu Ascender trims from 2003-2008. All specified vehicles must have the 4.2L inline-6 engine. Some sources note that depending on the vehicle configuration, minor modifications might be necessary, and professional installation at an exhaust shop is recommended. The product carries specific emissions compliance information. It is noted as having a CARB EO exemption, making it 50-state legal when installed according to the manufacturer's application guide and installation instructions. Some listings also mention it's legal for closed course competition or pre-emissions controlled vehicles only, and not street legal in California if not explicitly stated as 50-state legal.