MBRP 2003-2004 Dodge Cummins 4 Down-Pipe T409

The downpipe is the first section of the exhaust system after the turbocharger, and on most factory turbocharged vehicles it is also the single most restrictive exhaust component due to its large catalytic converter and tight mandrel bends. Turbocharged car enthusiasts who shop for aftermarket downpipes range from street-driven daily drivers looking for a bolt-on power and sound improvement to track-day and time attack builders prioritizing maximum flow on tuned builds with larger turbos. Upgrading the downpipe removes the primary restriction in the turbocharged exhaust path and can produce measurable gains in peak horsepower, turbo spool time, and exhaust note character when properly paired with an ECU calibration. Well-known platforms that benefit strongly from downpipe upgrades include the Subaru WRX and STI with the EJ205 and EJ257, the Volkswagen GTI EA888, Ford Mustang EcoBoost 2.3L, Mitsubishi Lancer Evolution 4B11T, and the BMW N54 and N55 engines.Popular UpgradesTop afterma...

Black Ops Auto Works carries one of the largest selections of performance exhaust systems available online, with 7,700+ products covering cat-back exhausts, axle-back exhausts, turbo-back systems, downpipes, headers, mid-pipes, X-pipes, H-pipes, mufflers, resonators, catalytic converters, exhaust tips, and every component in between. Whether you're building a street car, a daily driver, a diesel truck, or a track build, the right exhaust upgrade is here. Shop by Exhaust System Type Cat-Back Exhaust Systems: The most popular performance exhaust upgrade. Replaces everything from the catalytic converter back for improved sound, better flow, and premium tip styling. Available in single exit, dual exit, and quad exit configurations. Axle-Back Exhaust Systems: A simpler bolt-on that replaces the rear section from the axle back. Best for drivers who want an improved exhaust note and cleaner tip appearance without a full system swap. Headers and Manifolds: Long tube headers and shorty h...

Shop MBRP exhaust systems at Black Ops Auto Works for premium cat-back exhaust systems, axle-back exhausts, filter-back exhaust systems, performance exhaust tips, mufflers, universal exhaust components, and fabrication parts built for trucks, SUVs, Jeeps, muscle cars, and performance vehicles. MBRP is known for delivering aggressive sound, strong value, and durable exhaust upgrades designed to improve exhaust flow, styling, and overall driving experience. Whether you are upgrading a Ford F-150, Ford Ranger, Ford Ranger Raptor, Ford Mustang GT, Jeep Wrangler, Jeep Grand Cherokee SRT, Dodge Challenger, RAM RHO, Toyota 4Runner, Toyota Land Cruiser, Chevy Tahoe, Cadillac Escalade, Corvette, or Mazda Miata, MBRP offers vehicle-specific exhaust solutions for street, truck, and off-road builds. Shop MBRP Exhaust Parts by Category Browse MBRP performance exhaust products across popular categories, including: MBRP cat-back exhaust systems MBRP axle-back exhaust systems MBRP filter-back exha...