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- USA
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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23
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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:
- 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