MBRP S5093AL 4 inch Cat Back Exhaust System Single Side Exit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax V8

Features: - 4-inch aluminized steel cat-back system - Single side exit with 5-inch tip included - Dyno-tested for proven performance gains - Improves exhaust flow and reduces backpressure - Enhanced throttle response and fuel efficiency - Deep, aggressive sound without cabin drone - Mandrel-bent tubing for smoother flow - Bolt-on design for easy installation - Uses OEM-style hangers and includes hardware - Three-year warranty on aluminized steel High-Performance Exhaust System for GM 6.6L Duramax If you’re looking to give your 2020–2025 Silverado or Sierra HD with the 6.6L gas V8 a little more muscle—both in sound and performance—the MBRP 4-inch Cat-Back Exhaust System from the Installer Series is a solid choice that delivers results without overcomplicating things. It’s designed to bring out the best in your truck’s performance while adding a clean, aggressive exhaust note that won’t drone you out on the highway. This system replaces your factory exhaust with a high-flow, mandrel-bent 4-inch setup that improves airflow and reduces restrictions. That means your truck breathes easier under load, helping improve throttle response and reducing exhaust temps—something you’ll definitely appreciate when towing or climbing long grades. It’s been tested on MBRP’s in-house dyno and tuned specifically for the 6.6L gas engine, so you’re not just bolting on noise—you’re getting real, usable performance gains. Aluminized Steel Construction with Deep Exhaust Note Built from aluminized steel, the Installer Series offers long-term durability at a value-focused price point. It’s a great option for daily-driven trucks or workhorses that need better performance and sound without the premium cost of stainless. Additioanlly, the exhaust note is deep and throaty without being obnoxious. MBRP engineered this system to sound bold on the outside but refined in the cab. It’s a tone that adds character without becoming a headache on long drives. And with the single side exit design capped off by a large 5-inch polished tip, the system also gives your truck a tougher, more finished look out back. Installation is straightforward. It’s a true bolt-on design that uses your truck’s factory hangers and mounting points, so no welding or cutting is required. Everything you need is included in the box, and you can get it installed in the garage in just a couple hours using basic hand tools. Fits: 2020, 2021, 2022, 2023, 2024, 2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax