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  1. 49-04003NM aFe Power Downpipe Back Exhaust System for 2011-2015 LML Duramax

    49-04003NM aFe Power Downpipe Back Exhaust System for 2011-2015 LML Duramax

    aFe Power ATLAS 4" Down-Pipe Back Aluminized Steel Exhaust System w/o Muffler

    GM Diesel Trucks 11-15* V8-6.6L LML

    *This kit will only fit 2015 models manufactured before July 2014 equipped with a non-flanged down pipe.

    Learn More
    $379.00

  2. 49-04053 aFe Power Downpipe Back Exhaust System for 2015.5-2016 LML Duramax

    49-04053 aFe Power Downpipe Back Exhaust System for 2015.5-2016 LML Duramax

    ATLAS 4" DP-Back Aluminized Steel Exhaust System - No Tip

    GM Diesel Trucks 2015.5-2016 V8-6.6L LML 133.7" & 167.7" WB 

    • Constructed of 4" mandrel-bent aluminized steel tubing for maximum flow

    • A unique high quality OE style tapered flange is used for a complete 360 degree sealing surface

    • OE style bayonet hangers are used to maintain a stable pipe location

    • Includes a free flowing 12" muffler for maximum flow

    • Uses factory mounting locations providing stability and a hassle-free installation


    This kit will only fit models manufactured after July 2014 equipped with a flanged down pipe.

    Does not fit cab & chassis, Fits 133.7 " to 167.7" wheel bases only.

    Learn More
    $429.00

  3. 49-04003 aFe Power Downpipe Back Exhaust System for 2011-2015 LML Duramax

    49-04003 aFe Power Downpipe Back Exhaust System for 2011-2015 LML Duramax

    aFe Power ATLAS 4" Down-Pipe Back Aluminized Steel Exhaust System

    GM Diesel Trucks 11-15* V8-6.6L LML

    *This kit will only fit 2015 models manufactured before July 2014 equipped with a non-flanged down pipe.

    Learn More
    $429.00

  4. 49-44026NM aFe Power Cat Back Exhaust System for 2011-2015 LML Duramax

    49-44026NM aFe Power Cat Back Exhaust System for 2011-2015 LML Duramax

    Large Bore-HD 4" 409 Stainless Steel Cat-Back Exhaust System

    GM Diesel Trucks 11-15* V8-6.6L LML

    • Constructed of 4" mandrel-bent stainless steel tubing for maximum flow
    • OE style bayonet hangers are used to maintain a stable pipe location
    • Includes a muffler delete-pipe
    • Uses factory mounting locations providing stability and includes all necessary hardware for a hassle-free installation
    • Increased Flow and Performance
    • High quality OE style band clamps are used for a complete 36 sealing surface


    *This kit will only fit 2015 models manufactured before July 2014 equipped with a non-flanged down pipe.

    Learn More
    $439.00

  5. 49-44031NM aFe Power Downpipe Back Exhaust System for 2011-2015 LML Duramax

    49-44031NM aFe Power Downpipe Back Exhaust System for 2011-2015 LML Duramax

    Large Bore-HD 4" 409 Stainless Steel Down-Pipe Back Exhaust System

    GM Dsl Trucks 11-15* V8-6.6L LML 

    • Constructed of 4" mandrel-bent stainless steel tubing for maximum flow
    • OE style bayonet hangers are used to maintain a stable pipe location
    • Includes a muffler delete-pipe
    • Uses factory mounting locations providing stability and includes all necessary hardware for a hassle-free installation
    • Increased Flow and Performance
    • High quality OE style band clamps are used for a complete 36 sealing surface


    *This kit will only fit 2015 models manufactured before July 2014 equipped with a non-flanged down pipe.

    Learn More
    $519.00

  6. 49-44053-P aFe Power Downpipe Back Exhaust System for 2015.5-2016 LML Duramax

    49-44053-P aFe Power Downpipe Back Exhaust System for 2015.5-2016 LML Duramax

    Large Bore-HD 4" 409 Stainless Steel Down-Pipe Back Exhaust System

    GM Diesel Trucks 2015.5-2016 V8-6.6L LML 133.7" & 167.7" WB

    • Constructed of 4" mandrel-bent stainless steel tubing for maximum flow
    • Includes a 6" polished stainless steel clamp-on tip with a laser-cut stainless steel aFe power plate
    • A free-flowing 24" long muffler is used to absorb high pitch tones producing a powerful sound
    • A unique high quality OE style tapered flange is used for a complete 360 degree sealing surface
    • OE style bayonet hangers are used to maintain a stable pipe location
    • Uses factory mounting locations providing stability and a hassle-free installation


    This kit will only fit models manufactured after July 2014 equipped with a flanged down pipe.

    Does not fit cab & chassis, Fits 133.7 " to 167.7" wheel bases only.


    Learn More
    $659.00

  7. 49-44032 aFe Power Downpipe Back Exhaust System for 2011-2015 LML Duramax

    49-44032 aFe Power Downpipe Back Exhaust System for 2011-2015 LML Duramax

    Large Bore-HD 4" 409 Stainless Steel Down-Pipe Back Exhaust System

    GM Diesel Trucks 11-15* V8-6.6L LML

    *This kit will only fit 2015 models manufactured before July 2014 equipped with a non-flanged down pipe.

    Learn More
    $679.00

  8. 49-44053-B aFe Power Downpipe Back Exhaust System for 2015.5-2016 LML Duramax

    49-44053-B aFe Power Downpipe Back Exhaust System for 2015.5-2016 LML Duramax

    Large Bore-HD 4" 409 Stainless Steel Down-Pipe Back Exhaust System

    GM Diesel Trucks 2015.5-2016 V8-6.6L LML 133.7" & 167.7" WB 

    • Constructed of 4" mandrel-bent stainless steel tubing for maximum flow
    • Includes a 6" black stainless steel clamp-on tip with a laser-cut stainless steel aFe power plate
    • A free-flowing 24" long muffler is used to absorb high pitch tones producing a powerful sound
    • A unique high quality OE style tapered flange is used for a complete 360 degree sealing surface
    • OE style bayonet hangers are used to maintain a stable pipe location
    • Uses factory mounting locations providing stability and a hassle-free installation


    This kit will only fit models manufactured after July 2014 equipped with a flanged down pipe. 

    Does not fit cab & chassis, Fits 133.7 " to 167.7" wheel bases only.

    Learn More
    $699.00

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