• 5" down pipe-back full exhaust delete system for GM Chevy 6.6L Duramax diesel engines 2011-2016.
  • 5" polished stainless steel down pipe-back full exhaust delete kit for GM/Chevy 6.6L Duramax diesel trucks.
  • 5" stainless steel down pipe-back full exhaust delete kit for GM Chevy 6.6L Duramax diesel engines.
  • 5" down pipe-back full exhaust delete system for GM Chevy 6.6L Duramax diesel trucks 2011-2016.
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5" Down Pipe-Back Full Exhaust Delete | GM/Chevy 6.6 Duramax 2011-2016

5" Down Pipe-Back Full Exhaust Delete | GM/Chevy 6.6 Duramax 2011-2016

$949.00
$949.00
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Shipping calculated at checkout.
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FITMENT

Please choose the correct year variant before placing your order.

This pipe is compatible with:

  • Years: 2011–2016
  • Models: Chevy Silverado and GMC Sierra 2500HD and 3500HD pickups
  • Engine: 6.6L Duramax LML

Not compatible with: Cab & Chassis models

To tell the difference between a 2015 and a 2015.5, take a look at your downpipe connection:

  • V-band clamp connection: 2015 (early model)
  • 3-bolt flange connection: 2015.5 (later model)

IMPORTANT INSTALLATION INFORMATION

Not sure how to install this product? No worries! Every order comes with a step-by-step instruction guide, and our full-time support staff is here to help with any installation questions. Open a support ticket and we’ll get it sorted.

  • Delete pipe: bolts on with the bolts and clamps we provide. No welding, just basic tools you probably already own, like wrenches and ratchets.

If you’re a complete fish out of water when it comes to working on your truck, we highly recommend having a shop do the install.

CAB & CHASSIS INFORMATION

These pipes are designed for pickup models. Cab & Chassis trucks will need modifications for the pipe to fit.

For more information, contact our sales team at (888) 830-2588 ext. 2 or sales@thedieseldudes.com.

SHIPPING & RETURNS

Processing

We’ll process your order within 1–2 business days, and then your pipe ships.

Shipping

  • Standard (free): 5–8 business days
  • Express: 3–4 business days, available at the end of checkout

If the pipe is out of stock, we accept back orders, but your order may take a few weeks to ship.

Alaska, Hawaii, and some Canadian locations are subject to additional freight charges.

Returns

All exhaust systems and DPF/CAT delete pipes are final sale and not eligible for a refund or return. If you receive a faulty or wrong product, we’ll send you a replacement.

The 5" Downpipe-Back Delete Pipe for 2011–2016 LML Duramax removes the Diesel Particulate Filter (DPF) and catalytic converter (CAT) from your Silverado 2500HD/3500HD or Sierra 2500HD/3500HD. It's our best-selling Duramax 5" full exhaust, built from high-quality T-409 stainless steel with OEM-style hangers and clamps for an easy, factory-style install. Free shipping is included.

That 5" diameter moves more exhaust volume than a 4" pipe — less restriction at high-load RPM, faster turbo spool under heavy towing, and a more aggressive tone. The system runs from the downpipe back and replaces the OEM DPF and CAT sections with a wider, free-flowing path. With regen cycles and DPF backpressure gone, most owners feel the throttle response improve right away.

In the box you get the 5" T-409 stainless full exhaust, OEM-style hangers and clamps, and a step-by-step installation guide. It fits all cab and box lengths on the pickup models but does not fit Cab & Chassis trucks. One important note for 2015: early 2015 trucks use a V-Band clamp at the downpipe, while 2015.5 trucks use a 3-bolt flange — check your connection before ordering.

You'll need a compatible delete tune so the ECM doesn't throw DPF codes; call (888) 830-2588 to pair the right LML tuner. Final sale on exhaust — damaged or incorrect parts get replaced at no cost.

For off-road/competition use only.

  • 5 stars: 15 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
D
Dylan Jones
Night and day difference

The Full 5” exhaust sounds amazing.
Paired with the EZ LYNK tuner.
Everything worked great and the videos for installation are great. I did not install the exhaust though, had a buddy do it. Tuned myself

Dylan Jones review photo
P
Patrick
5 inch straight pipe

Order was easy and shipping to AK was fast. Wish I’d not have done the install in my driveway at 5 degrees lol. Install was straight forward and the exhaust sounds amazing. Very good quality pipe and they send it with the good band clamps instead of those unbolts

Patrick review photo
J
Jordan M.
5” Exhaust

I am not a bot and I actually purchased this full down pipe back exhaust. I was very skeptical at first. I pulled the trigger anyway and purchased this product. Now the shipping was projected to be a total 7-8 business days. It arrived in 15 total days. It comes with everything you need. I literally have no mechanical experience and I was able to install this, it took me about 7 hours though. All in all you get what you paid for.

Jordan M. review photo Jordan M. review photo
T
Trent Wangsgard

Good

E
Ethan
16 LML Delete

5’’ stainless exhaust went in good for my truck. Highly recommend watching dark iron diesels videos they help a lot.

J
Jeffrey Mcbride
Its a good.

**** of a truck now

J
Joe Fuchsluger
Exhaust

The new 5” exhaust sounds amazing so glad I installed the muffler and 5”-6” stainless tip

D
Daril Hosack
5 inch no muffler kit

I purchased the above kit and it came very well packaged! The included parts are high quality pretty simple to put together. I set all the pipes out and verified what I needed and began installing. You just need to take your time and make sure everything is rotated correctly under the truck. The exhaust looks and sounds AWESOME! Could not be happier.

S
Samuel King
Great Exhaust

Exhaust arrived with everything needed to put it on. Took about an hour to get it installed. When installing put everything on and leave all the clamps loose so you can move it around. Paired it with a 7” tip and it sounds great.

R
Russell Renner
2015 Duramax EFI Live full delete bundle

Tunes was easy to install. EGR removal was definitely some work to remove. All I can say is WOW on how the truck runs and sounds. Very happy that I went with the 5” exhaust. Wish I would have done this years ago.

G
Gualberto Diaz
Waltdiaz

I like it worth the money that I spent on the Delete kit for my 2015 GMC Duramax 👌🏾👍🏽

a
andrew griffin
5 inch exhaust kit

No complaints, went together smooth and easy. Nice clean finish. Happy customer here thanks guys!

S
Shea Showalter

5" Down Pipe-Back Full Exhaust Delete | GM/Chevy 6.6 Duramax 2011-2016

B
Beto Juarez
5” exhaust for my lml

The whole process was so easy and fast, I couldn’t be happier. I will be doing business with diesel dudes again.

B
Bryan Peterson
5” Exhaust

This exhaust system was a dream to install. Didn’t have to cut or modify anything. Took about an hour and a half on a 2 post lift. Sounds amazing too!

g
greg tressler

Is there a lmm version of this

thedieseldudes

Only the 4" https://thedieseldudes.com/products/4-exhaust-dpf-delete-gm-chevy-6-6l-duramax-lmm-2007-2010?variant=40304377495596

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