Cat-Back Exhaust Kit - 11- GM P/U 6.0L

The Cat-Back Exhaust Kit for 2011–2013 GM full-size pickup trucks with 6.0L engines is purpose-built for owners seeking improved exhaust flow and aggressive sound character without sacrificing daily drivability. This Flowmaster Force II cat-back system replaces the factory exhaust from the catalytic converter rearward, making it an ideal upgrade for truck enthusiasts who want bolt-on performance gains and a commanding presence at idle and cruise. Whether you're towing, commuting, or simply want to enhance your truck's personality, a quality cat-back exhaust delivers noticeable throttle response improvement and engine breathing efficiency.

Constructed from durable stainless steel, this cat-back kit features a 3.5-inch diameter main piping with dual 4-inch polished stainless tips that maximize scavenging and reduce backpressure across the RPM range. The Force II technology uses Flowmaster's proven chamber design to produce a deep, muscular tone while maintaining structural integrity and corrosion resistance. The natural stainless finish resists rust and thermal discoloration, ensuring long-term appearance and performance consistency even in harsh weather or high-mileage applications. Installation is straightforward—the kit bolts directly to your factory catalytic converter, requiring no welding or major modifications to the truck's underbody.

This exhaust system is engineered specifically for 2011–2013 GM full-size pickup trucks (including Silverado 1500/2500/3500 and Sierra equivalents) equipped with the 6.0L V8 engine. The 58.3-pound assembly ships as a complete cat-back kit with all necessary brackets, clamps, and hardware for straightforward bolt-on installation. Owners report improved cold-start acoustics, cleaner exhaust tone during acceleration, and measurable fuel economy gains in some driving scenarios due to reduced exhaust restriction. Professional installation is recommended to ensure proper hangers, clearance, and alignment, though experienced DIY mechanics can complete the job in 2–3 hours with basic hand tools.