SKU: 47625619050

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

$312.35 $347.05
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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:
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 47625619050

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4.1 ★★★★★
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Verified Purchase
Elizabeth
Dallas, US
★★★★★ 5
Well-made liner that ‘s heavy & durable
Size: 72"W x 78"L (Pack of 1), Color: 1a. Clear
These Barossa Design Long Shower Curtain Liner is thick, sturdy, and looks and feels noticeably more durable than standard liners. The heavier weight helps it hang straight without clinging, giving the shower a clean, polished look. It does a great job keeping water contained, and the material feels strong enough to last through regular use without tearing or thinning out. The length is ideal for taller showers, adding extra coverage and protection.
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Reviewed in the United States on May 20, 2026
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Verified Purchase
Graham S McLeod
Belleville, US
★★★★★ 5
Great Quality and Perfect for Creative Projector Effects
Size: 72"W x 72"L (Pack of 1), Color: 1a. Clear
Although designed as a shower curtain liner, I ended up using this for a completely different purpose and it worked perfectly. I placed it behind my study window as a projection screen for Halloween videos, and the results were fantastic. The material allowed the projector image to display clearly while still diffusing the light nicely for a great effect from outside. The quality was much better than expected, the material felt durable, and it was easy to position and work with. This product turned out to be incredibly versatile and offered excellent value for the money. If you enjoy creative decorating ideas or seasonal displays, this works brilliantly as an inexpensive projection screen alternative.
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Reviewed in the United States on May 27, 2026
J
Verified Purchase
Jean Paul
San Leandro, US
★★★★★ 5
Perfect length and actually stays in place.
Size: 72"W x 75"L (Pack of 1), Color: 1a. Clear
This liner solved a problem I didn’t realize was bothering me until I switched to it. The extra length makes a big difference—no more water sneaking out onto the floor or the curtain riding up while you’re showering. It hangs nicely and gives a cleaner, more finished look compared to standard sizes. The material feels thicker than the cheap liners you usually find, but not overly stiff. It drapes well and doesn’t stick to you while showering, which is a big plus. The magnets at the bottom actually work and help keep it in place against the tub, especially if you have any airflow in the bathroom. Installation was simple and the reinforced holes seem durable enough to last. Overall, it just does what it’s supposed to do without any fuss. For the price, it’s a solid upgrade and something I’d definitely buy again.
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Reviewed in the United States on April 19, 2026
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Verified Purchase
Mike Murdock
Belleville, US
★★★★★ 4
Well made
Size: 72"W x 72"L (Pack of 1), Color: 1b. Clear-heavy
The magnets hold well. The grommets are sturdy. The plastic is a bit thick and doesn't like to lie flat against the tub so it is constantly brushing you while you shower.
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Reviewed in the United States on May 14, 2026
A
Verified Purchase
Amazon Customer
Whiting, US
★★★★★ 5
Exactly what they say it is.
Size: 72"W x 72"L (Pack of 1), Color: 1b. Clear-heavy
Appears to work exactly as advertised, and quality is very satisfactory, which is always a pleasant surprise on Amazon. Magnets are strong enough, plastic feels pliable and durable. Don't forget the rings aren't included.
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Reviewed in the United States on May 20, 2026

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