Free Shipping On Orders Over $75. Details

Talk to a Sierra Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
$5,000 Giveaway! 5 Chances to Win! Enter Daily >

AFE MACH Force XP 3-Inch Dual Exhaust System with Polished Tips; Side Exit (14-18 4.3L Sierra 1500)

Item S501132
Call a Sierra Enthusiast at 1-888-706-1096
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Market Price $1,176.99 You Save 12% ($135.99)
Our Price

$1,041.00 (kit)

FREE Shipping

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    or use

      Product Information

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


      • Cat-Back Exhaust System
      • T-409 Stainless Steel Tubing
      • T-304 Stainless Steel Exhaust Tip
      • Mandrel Bent Tubing
      • 2-Year Warranty
      • Fits 2014-2018 4.3L Sierras


      Big, Aggressive Sound. The aFe Mach Force XP 3-inch Split Side Exit Cat-Back Exhaust with Polished Tips represents a one-stop upgrade for your 2014-2018 GMC Sierra, improving sound, performance, and appearance in one slick package. This stainless steel system creates a powerful, aggressive exhaust note that sinks to a rumbling growl when cruising but bursts out in a roar when accelerating. The Mach Force XP adds +14 horsepower and +17 ft/lbs of torque to your machine by clearing away exhaust vapors before they can back up into the engine. The two 4.5-inch mirror polished tips display the aFe Power badge in black for high-performance styling.

      Built for Years of Use. Featuring stainless steel construction throughout, the USA-made aFe Mach Force XP Cat-Back has 3" pipes and a 21" muffler made from T-409 stainless steel, plus a pair of T-304 stainless steel exhaust tips. Though warranted for 2 years, this nearly rust-proof system usually lasts much longer. Bolt-on installation as a direct fit replacement part using the factory mounting locations is helped along by included hardware, band clamps, and bayonet hangers.

      Application. This aFe Mach Force-Xp 3 in. Split Side Exit Cat-Back Exhaust with Polished Tips is designed to be used on the 2014-2018 4.3L GMC Sierra's with the following cab and box configurations.
      • Crew Cab with the Short Box
      • Crew Cab with the Standard Box

      Shop All Truck Parts And Accessories

      Shop All Truck Exhaust

      Fitment: 2014 2015 2016 2017 2018 Details

      AFE 49-44057-P

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      What's in the Box

      • (1) Cat-Back Exhaust System
      • Hardware

      Tech Specs


      Customer Reviews (68)

        Questions & Answers

        10 More Questions

        Will It Fit My Sierra 1500

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

        Designed for Double Cab and Crew Cab Models.

            Related Sierra 1500 Categories