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Home > 4"/5" Downpipe-Back Exhaust 2011-2015 LML 6.6 Duramax DPF Delete Race Pipe | SPELAB
Downpipe-back DPF delete race pipe with a wide slip-fit sleeve at mid-run and an upturned tailpipe end, paired with a black SPELAB exhaust tip and a DPF delete kit box for 2011-2015 LML 6.6L Duramax pickups.
Stainless downpipe-back DPF delete race pipe for 2011-2015 Chevy Silverado and GMC Sierra 6.6L Duramax LML, with an S-bend downpipe, slip-joint mid tubes, wire hangers and an upturned tailpipe.
Stainless DPF delete exhaust tubing set for 2011-2015 LML 6.6L Duramax: mandrel-bent tailpipe, cranked mid-pipe, three straight connectors, split sleeve coupler, band clamp and circular hanger bracket
Stainless downpipe-back DPF delete race pipe for 2011-2015 LML 6.6L Duramax Silverado and Sierra trucks, with an up-and-over downpipe bend, band-clamped joints, slip-fit mid tubes and a short upturned tailpipe.
Mandrel-bent stainless exhaust pipes for a 2011-2015 LML 6.6L Duramax DPF delete system, with a downswept stepped tailpipe, long offset mid-tube, straight splices and a single band clamp
Stainless downpipe-back DPF delete exhaust with an inline cylindrical muffler for 2011-2015 LML 6.6L Duramax Silverado and Sierra, plus an S-bend downpipe, wire hangers and an upturned tailpipe end.
Stainless DPF delete cat-back components for 2011-2015 LML 6.6L Duramax, led by a polished cylindrical resonator with mandrel-bent tail and crossover pipes, straight connectors, band clamp and hanger bracket
Flanged stainless downpipe-back DPF delete pipe for 2011-2015 LML 6.6L Duramax Silverado and Sierra, with a bolt flange on the downpipe end, an S-bend, band clamps, a rubber-latched hanger and a connector tube.
Black SPELAB exhaust tip fitted over the downpipe outlet of a stainless DPF delete race pipe for 2011-2015 LML 6.6L Duramax Silverado and Sierra, with slip joints, wire hangers and an upturned tailpipe.
Mandrel-bent stainless DPF delete race pipe for 2011-2015 LML 6.6L Duramax with deep S-curve front bend, one band clamp, rod hangers and crimped reducing tail, bundled with a black slant-cut SPELAB exhaust tip
Crank-offset bent stainless race pipe for 2011-2015 LML 6.6L Duramax DPF delete, with banded joint at the head, twin rod hangers and two crimped sleeve couplers, bundled with a black slant-cut SPELAB tip
S-bent stainless race pipe with an inline cylindrical resonator between crimped sleeves for 2011-2015 LML 6.6L Duramax DPF delete exhaust, paired with a black slant-cut SPELAB exhaust tip
Downpipe-back DPF delete race pipe with wire hook hangers along its straight run, paired with a black SPELAB exhaust tip and a SPELAB DPF delete kit box for 2011-2015 LML 6.6L Duramax Silverado and Sierra.
Downpipe-back DPF delete race pipe with a double band clamp at the downpipe elbow, paired with a black SPELAB exhaust tip and a DPF delete kit box for 2011-2015 LML 6.6L Duramax Silverado and Sierra.
Downpipe-back DPF delete exhaust with an inline cylindrical resonator and wire hanger hooks, paired with a black SPELAB exhaust tip and a DPF delete kit box for 2011-2015 LML 6.6L Duramax Silverado and Sierra.
Chrome-polished downpipe-back DPF delete pipe with a bolt flange on the downpipe end, band clamps and a rubber-latched hanger, plus a black SPELAB tip and DPF delete kit box for 2011-2015 LML 6.6L Duramax.
Downpipe-back DPF delete race pipe with a band clamp on the downpipe drop and a raised slip sleeve on the straight run, paired with a black SPELAB exhaust tip and a DPF delete kit box for 2011-2015 LML Duramax.
Downpipe-back DPF delete exhaust with an inline resonator and a band clamp at the downpipe elbow, paired with a black SPELAB exhaust tip and a DPF delete kit box for 2011-2015 LML 6.6L Duramax Sierra and Silverado.
Black mandrel-bent DPF delete exhaust pipe with band clamps and a heat-wrapped flex section, paired with a black SPELAB tip and a DPF delete kit box.
Black titanium heat wrap wound tightly around a mandrel-bent exhaust pipe, secured with stainless clamps and rated for extreme underhood heat.
Two full-length DPF delete exhaust pipes side by side, one in a matte black coating and one in polished stainless steel, both mandrel-bent with band clamps and hangers.
Downpipe-back DPF delete race pipe with a wide slip-fit sleeve at mid-run and an upturned tailpipe end, paired with a black SPELAB exhaust tip and a DPF delete kit box for 2011-2015 LML 6.6L Duramax pickups.
Stainless downpipe-back DPF delete race pipe for 2011-2015 Chevy Silverado and GMC Sierra 6.6L Duramax LML, with an S-bend downpipe, slip-joint mid tubes, wire hangers and an upturned tailpipe.
Stainless DPF delete exhaust tubing set for 2011-2015 LML 6.6L Duramax: mandrel-bent tailpipe, cranked mid-pipe, three straight connectors, split sleeve coupler, band clamp and circular hanger bracket
Stainless downpipe-back DPF delete race pipe for 2011-2015 LML 6.6L Duramax Silverado and Sierra trucks, with an up-and-over downpipe bend, band-clamped joints, slip-fit mid tubes and a short upturned tailpipe.
Mandrel-bent stainless exhaust pipes for a 2011-2015 LML 6.6L Duramax DPF delete system, with a downswept stepped tailpipe, long offset mid-tube, straight splices and a single band clamp
Stainless downpipe-back DPF delete exhaust with an inline cylindrical muffler for 2011-2015 LML 6.6L Duramax Silverado and Sierra, plus an S-bend downpipe, wire hangers and an upturned tailpipe end.
Stainless DPF delete cat-back components for 2011-2015 LML 6.6L Duramax, led by a polished cylindrical resonator with mandrel-bent tail and crossover pipes, straight connectors, band clamp and hanger bracket
Flanged stainless downpipe-back DPF delete pipe for 2011-2015 LML 6.6L Duramax Silverado and Sierra, with a bolt flange on the downpipe end, an S-bend, band clamps, a rubber-latched hanger and a connector tube.
Black SPELAB exhaust tip fitted over the downpipe outlet of a stainless DPF delete race pipe for 2011-2015 LML 6.6L Duramax Silverado and Sierra, with slip joints, wire hangers and an upturned tailpipe.
Mandrel-bent stainless DPF delete race pipe for 2011-2015 LML 6.6L Duramax with deep S-curve front bend, one band clamp, rod hangers and crimped reducing tail, bundled with a black slant-cut SPELAB exhaust tip
Crank-offset bent stainless race pipe for 2011-2015 LML 6.6L Duramax DPF delete, with banded joint at the head, twin rod hangers and two crimped sleeve couplers, bundled with a black slant-cut SPELAB tip
S-bent stainless race pipe with an inline cylindrical resonator between crimped sleeves for 2011-2015 LML 6.6L Duramax DPF delete exhaust, paired with a black slant-cut SPELAB exhaust tip
Downpipe-back DPF delete race pipe with wire hook hangers along its straight run, paired with a black SPELAB exhaust tip and a SPELAB DPF delete kit box for 2011-2015 LML 6.6L Duramax Silverado and Sierra.
Downpipe-back DPF delete race pipe with a double band clamp at the downpipe elbow, paired with a black SPELAB exhaust tip and a DPF delete kit box for 2011-2015 LML 6.6L Duramax Silverado and Sierra.
Downpipe-back DPF delete exhaust with an inline cylindrical resonator and wire hanger hooks, paired with a black SPELAB exhaust tip and a DPF delete kit box for 2011-2015 LML 6.6L Duramax Silverado and Sierra.
Chrome-polished downpipe-back DPF delete pipe with a bolt flange on the downpipe end, band clamps and a rubber-latched hanger, plus a black SPELAB tip and DPF delete kit box for 2011-2015 LML 6.6L Duramax.
Downpipe-back DPF delete race pipe with a band clamp on the downpipe drop and a raised slip sleeve on the straight run, paired with a black SPELAB exhaust tip and a DPF delete kit box for 2011-2015 LML Duramax.
Downpipe-back DPF delete exhaust with an inline resonator and a band clamp at the downpipe elbow, paired with a black SPELAB exhaust tip and a DPF delete kit box for 2011-2015 LML 6.6L Duramax Sierra and Silverado.
Black mandrel-bent DPF delete exhaust pipe with band clamps and a heat-wrapped flex section, paired with a black SPELAB tip and a DPF delete kit box.
Black titanium heat wrap wound tightly around a mandrel-bent exhaust pipe, secured with stainless clamps and rated for extreme underhood heat.
Two full-length DPF delete exhaust pipes side by side, one in a matte black coating and one in polished stainless steel, both mandrel-bent with band clamps and hangers.

4"/5" Downpipe-Back Exhaust 2011-2015 LML 6.6 Duramax DPF Delete Race Pipe | SPELAB

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Selected Variant SKU: SPES08066-ES08019SP
$639.00
$855.00 -25% $639.00
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Description Fitment FAQ Shipping & Returns

Unlock your 2011-2015 LML Cummins's true potential with this high-performance DPF delete pipe. Our precision-engineered solution eliminates restrictive factory filters, dramatically reducing exhaust gas temperatures (EGTs) while improving turbo spool-up and throttle response. The mandrel-bent construction ensures maximum flow efficiency, helping your diesel breathe easier. Perfect for off-road enthusiasts seeking better power delivery and reduced maintenance hassles.

Specification

Exhaust Material T-409 Stainless Steel, it is magnetic.
Thickness 2mm thick for long-lasting durability and heat resistance.
Inlet Diameter  4.0"/5.0‘’
mandrel-bent construction Maximum flow efficiency, helping your diesel breathe easier

 

Benefits

Expect to see a significant increase in fuel mileage. If your DPF is plugged up your probably averaging about 13-14 mpg. More or less depending on the severity of the restriction. After deleting the DPF/CAT expect to get a combined mileage of 18-19 mpg.

  • It removes the need to service the DPF at regular intervals (cleaning, replacement)
  • A DPF delete will remove the possibility of a DPF failure which could cause expensive diesel repairs
  • Due to less exhaust backpressure, the DPF delete increases exhaust flow and therefore increases the performance of your motor!
  • Paired with an ECU remap, the DPF delete is proven to increase power and torque for all vehicles

Installation

Install takes about 1hr with basic hand tools done on the ground of your driveway or garage. Quicker if you have automotive style lift. Cutting may be be required to fit shorter wheelbase bed/cab configurations. Clamps, hangers and hardware are included. You may have to re-use some factory hardware.
Tuner Required: Removal of the DPF, CAT, SCR, and/or DOC involves removing and eliminating emission related sensors. A DPF delete capable tuner is required to prevent any check engine light or diagnostic trouble codes from setting.
  • 5 stars: 10 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
H
Hunter Sutton

Everything is great with it

D
Douglas Baslee

4"/5" Downpipe-Back 2011-2015 LML 6.6 Duramax DPF Delete Race Pipe | SPELAB

D
David Friesen
Phenomenal performance

Easy to install if you know a thing or two, sounds a lot deeper stronger than the 4 in did, overall happy with my purchase arrived on time

G
Gabriel Morrow
5 inch exhaust

Grate product it was just what I was looking for. Fast shipping and a great fit. Thank you so much, much appreciated!!

O
Omari Crawford

4"/5" Downpipe-Back 2011-2015 LML 6.6 Duramax DPF Delete Race Pipe | SPELAB

M
Maxwell Remmey
Awesome product

I was super impressed with the 5" straight pipe. I am currently making a review video of it, awesome product, perfect fitment. 100% going to buy more products from yall at SPELAB!

M
Michael Dailey

Worked out great

S
Stephen Brant
Great

Everything fit well and very happy with the delivery

Thanks for the review and I look forward to receiving pictures of your installation feedback!

K
Kian Shelton
Lml straight pipe

Fit well and all the brackets were in the right spots. Definitely recommend

Hi, thanks for your comment, looking forward to receiving feedback on your installation pictures!

A
Aaron Vork
Highly recomend

Awesome service good shipping friendly and helpful customer service

Thanks for the review and look forward to receiving pictures of your install!

J
Jake

My truck already has a 4 inch downpipe back exhaust from Mbrp and I want to switch to a 5 inch and the DPF and CAT that is all gone do I still have to get it re-tuned

SPELAB

Thank you for your inquiry. If it has already been tuned, there is no need to re-tuned when upgrading from 4 inches to 5 inches. Please feel free to proceed with the payment. For further information, please contact us at: (service@spelabautoparts.com).

s
sam embry

Does the dual exhaust allow me to keep my spare tire.

SPELAB

Thank you for your inquiry. As for your question, the answer is that, under normal circumstances, it does not have any effect. For further information, please contact us at: (service@spelabautoparts.com).

m
mark stokke

will this exhaust system fit 2014 cab and chassis?

SPELAB

Thank you for your inquiry.

We regret to inform you that this item does not meet your requirements.

We will keep your request on file and take it into consideration for future product launches.

Please subscribe to our website, and we will notify you promptly when new products arrive.

For further information, please contact us at: (service@spelabautoparts.com).