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The Diamond Eye 4-inch DPF-back aluminized exhaust kit provides a direct-fit replacement for the factory DPF-back piping on 2011–2012 Chevrolet and GMC 6.6L Duramax 2500/3500 trucks. Built with mandrel-bent tubing and modern fabrication methods, the kit supports all cab and bed lengths and is produced using CNC mandrel bending and in-house R&D to ensure consistent fit, quality tubing processing, and dependable assembly.
Diamond Eye KIT 4in DPF-BACK Single AL: 11-12 CHEVY 6.6L 2500/350
