The Redback Extreme Duty Exhaust for 79 Series Landcruiser with Auxiliary Fuel Tank (from November 2016 onwards) is a purpose-built 3″ DPF-back exhaust system engineered to work seamlessly with vehicles fitted with an auxiliary fuel tank ahead of the rear differential. Constructed from robust 409 stainless steel tubing and manufactured in Australia, the system features 4‑bolt, 10 mm thick flange plates, extreme-duty hanger brackets, pressed fire-ring gaskets, and a removable ¼" NPT plug boss for optional EGT sensor installation. With sound configuration options — either a 5″ round straight-through resonator for a balanced tone or a muffler‑delete (pipe-only) for maximum flow and aggressive sound — this exhaust balances performance, practicality, and reliability. The exhaust is finished in premium heat-resistant paint to resist corrosion and heat under heavy-duty and off‑road conditions. Installation typically takes around 1.5 hours and the system is backed by a 10‑year manufacturer warranty.