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On-Road Exhaust

2007+ GMT900 GM/Chevrolet 6.6L LMM Duramax On-Road Exhaust Systems

*Please note: Some 5 inch and dual exhaust systems DO NOT work with a factory spare tire installed. Please contact the exhaust manufacturer before purchasing to verify fitment.


Replace, worn, rusted or broken up pipe hardware with DHD's large flange up pipe bolts. Our phosphate oil coated 10.9 bolts meet or exceed all OEM specs....

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From FloPro, FloPro

2004.5-2010, 6.6L, 2500/3500, 3" Turbo Direct Pipe.

Competition Exhaust Pipes

  • Simple bolt on installation for competition use
  • Built using heavy duty steel in 3” diameter
  • Utilizes OE style connections to ensure a proper fitment
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    WARNING
    Any product that requires the removal of ANY emissions control device is strictly prohibited and is intended for closed course racing only for non-registered vehicles. Our systems were designed to fit factory vehicles without ANY after market 5th wheel or in-bed gooseneck hitches, chassis or suspension mods.
     
    Flo Pro part number:  10100

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    From HSP Diesel, HSP Diesel

    HSP LLY/LBZ/LMM Downpipe Constructed from 304 Stainless Steel 3" Tubing Fabricated to allow extra clearance for aftermarket up-pipes...


    Remove your crushed oval stock down pipe and replace it with a smooth round, long lasting, 304 stainless steel down pipe. Spiral wrapped with titanium woven...

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    From MBRP, MBRP

    3" Down Pipe
    Chevy/ GMC 2004.5-2009 (LLY/ LBZ/ LMM)

    While the search for more power for your LLY, LBZ or LMM Duramax powered vehicle usually leads you down the path of exhaust, intake and tuner, one item that is often overlooked is the factory restrictive turbo direct pipe. MBRP has addressed this restrictive component of the factory exhaust with our new turbo direct pipe replacement that mounts between your factory turbo and your exhaust system. Featuring full 16 gauge mandrel bent tubing for maximum flow, and an extremely durable high temperature ceramic coating, these pipes deepen the sound of your V8 diesel engine while lowering EGT's and providing quicker throttle response.

    MBRP: GM8424

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    From Magnaflow Magnaflow

    V8 6.6L (DIESEL); Silverado/Sierra 2500HD/3500; Extended-Crew Cab/Short-Long Bed 4.0in. Filter-Back; 6 x 6 x 14in. Muffler; 5.0in. Ceramic Black Coated...

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    From Magnaflow Magnaflow

    V8 6.6L (DIESEL); Silverado 2500HD/3500; Extended-Crew Cab/Short-Long Bed
    4.0in. Particulate Filter-Back; Muffler-Delete Pipe; 5.0in. Inter-Cooled Tip; DUAL SAME SIDE BEHIND PASSENGER REAR TIRE

    Material: Aluminized Steel
    Tubing O.D. Size: 4in.
    System Type: DPF-Back
    TIP O.D. Size:  5in.

    TIP Quantity: 2

    Single/Dual: Dual
    Exit Position:
    SINGLE PASSENGER SIDE REAR EXIT

    Features and Benefits:  Lifetime Warranty, Dyno Tested And Proven To Make Power, Performance Gains In Horsepower And Torque, Great Sound -Has A Smooth; Deep Tone, Easy To Install, Mandrel-Bent. All Welded. Built To Last.

    Magnaflow part number: 18915

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    From Magnaflow Magnaflow

    V8 6.6L (DIESEL); 2500HD/3500; Extended-Crew Cab/Short-Long Bed
    4.0in. Particulate Filter-Back;
    Muffler-Delete Pipe; 5.0in. Inter-Cooled Tip; SINGLE PASSENGER SIDE REAR EXIT

    Material: Stainless Steel
    Tubing O.D. Size: 4in.
    System Type: DPF-Back
    TIP O.D. Size:  5in

    TIP Quantity: 1
    Single/Dual: Single
    Exit Position:
    SINGLE PASSENGER SIDE REAR EXIT

    Features and Benefits:  Lifetime Warranty, Dyno Tested And Proven To Make Power, Performance Gains In Horsepower And Torque, Great Sound -Has A Smooth; Deep Tone, Easy To Install, Mandrel-Bent. All Welded. Built To Last.

    Magnaflow part number: 17911

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    From Magnaflow Magnaflow

    V8 6.6L (DIESEL); Silverado/Sierra 2500HD/3500; Extended-Crew Cab/Short-Long Bed 4.0in. Particulate Filter-Back; Polished 7 x 14 Muffler ; Muffler Delete...

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    From Magnaflow Magnaflow

    V8 6.6L (DIESEL); Silverado/Sierra 2500HD/3500; Extended-Crew Cab/Short-Long Bed 5.0in. Particulate Filter-Back; 7 x 14 Muffler; 6.0in. Inter-Cooled Tip;...

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    From Magnaflow Magnaflow

    V8 6.6L (DIESEL); Silverado/Sierra 2500HD/3500; Extended-Crew Cab/Short-Long Bed 4.0in. Particulate Filter-Back; 7 x 14 Muffler; Muffler Delete Pipe; 5.0in....

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