{"product_id":"mbrp-04-06-jeep-wrangler-tj-unlimited-4-0l-i-6-cat-back-single-t409-exhaust","title":"MBRP 04-06 Jeep Wrangler (TJ) Unlimited 4 0L I-6 Cat Back Single T409 Exhaust","description":"\u003cp class=\"p1\"\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e: S5520409 \/ \u003cstrong\u003eUPC\u003c\/strong\u003e: 882963111067\u003c\/p\u003e\n\u003ch4 class=\"p1\"\u003e\u003cb\u003eMBRP Cat-Back Exhaust System for 2004-2006 Jeep Wrangler TJ Unlimited 4.0L I6 \u003c\/b\u003e\u003c\/h4\u003e\n\u003cp class=\"p1\"\u003eOutfit your 2004-2006 Jeep Wrangler TJ Unlimited's exhaust with the MBRP S5520409 cat-back system, engineered for direct bolt-on installation that unlocks noticeable gains in horsepower and torque while delivering a deep, aggressive exhaust note perfect for off-road adventures and daily drives. This single-exit setup routes 2.5-inch mandrel-bent tubing from the catalytic converter back, paired with a high-flow Race Profile muffler that reduces backpressure, lowers exhaust temperatures, and enhances overall engine efficiency for better throttle response and fuel economy compared to stock configurations. Built from durable T409 stainless steel, it withstands harsh conditions like salt, mud, and rough terrain without compromising flow or sound quality, making it the reliable pick for Wrangler owners seeking proven dyno-tested improvements without the hassle of custom fabrication.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003ePrecise Vehicle Fitment\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eYears:\u003c\/b\u003e 2004-2006\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eMake:\u003c\/b\u003e Jeep\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eModel:\u003c\/b\u003e Wrangler TJ Unlimited (LJ)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eEngine:\u003c\/b\u003e 4.0L Inline-6 (I6) – confirmed compatibility with Rubicon, SE, Sport, Sahara, X, 65th Anniversary Edition, and Unlimited variants\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eNotes:\u003c\/b\u003e Utilizes factory hanger locations for a seamless fit; verify clearance for aftermarket fuel tank skid plates, as some may require minor adjustments\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eComplete Kit Contents\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThis all-in-one exhaust kit includes everything needed for a straightforward installation:\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eRace Profile high-flow muffler\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2.5-inch turndown tailpipe (single rear exit, no separate tip required)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2.5-inch band clamp\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eMuffler flange fasteners and hardware\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eAdditional exhaust hanger with fasteners\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eComprehensive installation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eKey Specifications\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eMaterial:\u003c\/b\u003e T409 stainless steel construction for rust resistance and easy maintenance\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePipe Diameter:\u003c\/b\u003e 2.5 inches (mandrel-bent for smooth flow)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eExit Style:\u003c\/b\u003e Single rear turndown\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePart Number:\u003c\/b\u003e S5520409\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eUPC:\u003c\/b\u003e 882963111067\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eProduct Weight:\u003c\/b\u003e 23 lbs\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eShipping Box Dimensions:\u003c\/b\u003e 37 inches L x 11.65 inches W x 6.65 inches H (compact packaging for cost-effective delivery)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eEPA Compliance:\u003c\/b\u003e 50-state legal, meets emissions standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eEasy Installation and Long-Term Support\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eBolt this system on using basic hand tools in under two hours – start by removing the stock muffler and tailpipe, secure the new muffler to the existing flange at 45 lb-ft torque, align the tailpipe with the clamp, and mount the hanger to the frame hole above it. Welded hangers ensure vibration-free alignment, and the design avoids welding or cutting for a reversible upgrade. Backed by a lifetime warranty against material and workmanship defects for the original owner (excludes surface rust, abuse, or improper install), it's crafted in North America to handle real-world demands.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eFor 2004-2006 Jeep Wrangler TJ Unlimited owners upgrading from factory exhaust, the MBRP S5520409 stands out with its balance of power gains, rugged build, and hassle-free setup.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cstrong\u003eThis Part Fits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth align=\"left\" width=\"100\"\u003eYear\u003c\/th\u003e\n\u003cth align=\"left\" width=\"125\"\u003eMake\u003c\/th\u003e\n\u003cth align=\"left\" width=\"150\"\u003eModel\u003c\/th\u003e\n\u003cth align=\"left\" width=\"80\"\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2004-2006\u003c\/td\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eWrangler\u003c\/td\u003e\n\u003ctd\u003eUnlimited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005-2006\u003c\/td\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eWrangler\u003c\/td\u003e\n\u003ctd\u003eUnlimited Rubicon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"MBRP","offers":[{"title":"Default Title","offer_id":39659285905487,"sku":"MBRPS5520409","price":324.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/SKU_S5520409_UPC_882963111067.jpg?v=1760547576","url":"https:\/\/www.blackopsautoworks.com\/products\/mbrp-04-06-jeep-wrangler-tj-unlimited-4-0l-i-6-cat-back-single-t409-exhaust","provider":"Black Ops Auto Works","version":"1.0","type":"link"}