SKU: 47625619050

6.6L Duramax Downpipe-Back Race Exhaust for 2011-2015 Silverado/Sierra HD - Fits 2500/3500 Models | Mandrel-Bent Construction

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Ships within 48 hours · Estimated delivery Jul 16 - Jul 21

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Description

6.6L Duramax Downpipe-Back Race Exhaust for 2011-2015 Silverado/Sierra HD - Fits 2500/3500 Models | Mandrel-Bent ConstructionMaximize your Duramax's performance with this competition ready stainless steel exhaust system. Features 5" mandrel bent stainless steel high flow design that reduces backpressure and eliminates restrictive factory DPF & CAT emissions components. Improves turbo response, lowers EGTs during heavy towing, and delivers an aggressive diesel sound with straight through design. Specification Detail Construction 5" Mandrel Bent Stainless Steel System Type

Maximize your Duramax's performance with this competition-ready stainless steel exhaust system. Features 5" mandrel-bent stainless steel high-flow design that reduces backpressure and eliminates restrictive factory DPF & CAT emissions components. Improves turbo response, lowers EGTs during heavy towing, and delivers an aggressive diesel sound with straight-through design.

Specification Detail
Construction 5" Mandrel-Bent Stainless Steel
System Type Downpipe-Back Exhaust System
Installation Direct bolt-on fitment with OE-style hangers
Emissions DPF & CAT delete - eliminates restrictive factory components
Performance Benefits Reduces backpressure, lowers EGTs, improves turbo response
Sound Aggressive diesel sound with straight-through design
Requirements Requires ECU tuning. For off-road/racing use only.

 

  Fitment:

Vehicle Model Years Engine
Chevrolet Silverado 2500HD/3500HD 2011-2015 6.6L Duramax LML
GMC Sierra 2500HD/3500HD 2011-2015 6.6L Duramax LML

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 47625619050

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4.1 ★★★★★
Based on 6 reviews
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Verified Purchase
Theresa
Dallas, US
★★★★★ 4
No show but stays on
Size: Medium, Color: (014) Halo Gray / Halo Gray / Castlerock
I wear these socks daily. They truly don’t show with my workout shoes or with hey dudes. But the best thing about them is that they actually stay on your foot. I work out hard and I don’t ever have to pull them up. I do wish they were just a little bit thicker than they are, but they are definitely a product I will buy again.
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Reviewed in the United States on May 22, 2026
K
Verified Purchase
Kira Stewart
Massapequa, US
★★★★★ 5
My favorite socks
Size: Medium, Color: (659) Fuchsia Dusk / Fuchsia Dusk / Tourmaline Pink
Very comfortable. True to size. Moisture wicking
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Reviewed in the United States on April 25, 2026
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Verified Purchase
Jro
Battle Creek, US
★★★★★ 5
Great for workouts
Size: 10.5, Color: (110) Summit White/White/Khaki Base
I bought these shoes for home workouts, both lifting and aerobics. They're very stable, have the perfect amount of cushion without compromising stability, and are comfortable. They run a bit small; I'm usually a 10, ordered a 10.5 and my toe is at the end. They're snug but not tight and seem to have a good amount of room in the toe box. I'd recommend these.
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Reviewed in the United States on March 13, 2026
A
Verified Purchase
Animals
Whiting, US
★★★★★ 5
My walking shoes
Size: 8.5, Color: (418) Blue Smoke/White/Nu Blue
I bought these last year before a vacation when I knew we'd be doing miles of walking a day. I had ZERO blisters breaking them in and immediately walking 10k+ steps in them. Now they still get a lot of wear at home for outings when walking will be involved. No issues, very comfortable, would recommend!
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Reviewed in the United States on April 28, 2026
K
Verified Purchase
K Soles
Grantham, US
★★★★★ 5
Don’t pass these up!
Size: 9, Color: (673) Tourmaline Pink/Summit White/Maroon Mist
I’m 67 years old, 5’3” tall, and weigh 117 pounds. I bought these shoes to wear during my daily “walking workouts “. When I first tried the shoes on they seemed too firm but I decided to give them a try and I’m glad I did! The cushioning was excellent and there was ample toe room. The color of the shoes is the same as the picture - and is really pretty.
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Reviewed in the United States on February 8, 2026

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