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MBRP 3-Inch XP Series Dual Exhaust System with Polished Tips; Rear Exit (14-18 4.3L Sierra 1500)

Item S501126
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • XP Series Exhaust System
      • 3" 409 Stainless Steel Mandrel Bent Tubing
      • Mirror Polished T-304 Stainless Steel Exhaust Tips
      • 16-Gauge Tubing Walls
      • Split Rear Exit
      • High Flow Muffler
      • Deep, Mellow Exhaust Note
      • Will Only Work with 1-Piece Drive Shaft
      • Hardware Included
      • Limited Lifetime Warranty
      • Fits 2014-2018 4.3L GMC Sierras


      Long-Lasting, Rugged. Directing the exhaust out two split rear exits facing to the rear, each tipped by a glistening 4.5" stainless exhaust tip, the MBRP XP Series 3-inch Split Rear Exit Cat-Back Exhaust is a system for your 2014-2018 Sierra that's made from intermediate grade stainless. Rumbling authoritatively with a strong yet tuneful sound, the exhaust also looks good thanks to its brash styling, with two large exhaust tip visible below the rear bumper. Dyno tests indicate this cat-back can yield up to +5-10% extra hp and torque for your truck – engine efficiency that's underlined further by the +1-2 mpg gas economy gains you'll enjoy with this system installed.

      T-409 Stainless Design. MBRP's engineers use T-409 stainless for all parts of this cat-back system, with the exception of the T-304 stainless steel tips. Cheaper than T-304 and therefore giving you more bang for your buck, T-409 nevertheless stands up stubbornly to rust and corrosion, giving you a limited lifetime warranty on this system.

      Easy Installation. The installation process of MBRP Cat-Back Exhaust is easy and the exhaust system can be installed with common hand tools. The bolt-on, no weld design provides you with a hassle-free installation process that can be completed in approximately 1-2 hours. Depending on your cab and box size, some cutting to the piping may be required.

      Application. The MBRP XP Series 3-inch Split Rear Exit Cat-Back Exhaust is designed to fit with all of the cab and box configurations available for the 2014-2018 GMC Sierra's with the 4.3L engine. The kit will only work with a 1-piece drive shaft.

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      MBRP S5084409

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Muffler
      • (1) Extension Pipe
      • (2) Over Axle Pipes
      • (2) Tips
      • Installation Hardware

      Tech Specs


      Customer Reviews (100+)

        Questions & Answers

        10 More Questions

        Will It Fit My Sierra 1500

        • 4.3L V6 - 14, 15, 16, 17, 18

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