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Diamond Eye 4" cat-back exhaust kit for 2006–2007.5 Chevy/GMC 6.6L Duramax 2500/3500 (all cab and bed lengths) is mandrel-bent and produced using Diamond Eye’s advanced CNC and fabrication processes. The system is built to exacting dimensions using 4" tubing and 409-grade stainless options, reflecting the manufacturer’s focus on precise mandrel bending, durable fabrication, and modern production standards.
Diamond Eye KIT 4in Catback MFLR RPLCMENT PIPE DUAL SS: 2006-2007.5 CHEVY/GMC 6.6L 2500/3500
