DIESELR Downpipe Back Exhaust - Single (2007.5-2010 GM 2500/3500 6.6L Duramax LMM)
DIESELR Downpipe Back Exhaust - Single (2007.5-2010 GM 2500/3500 6.6L Duramax LMM) - 5" / No Muffler is backordered and will ship as soon as it is back in stock.
Confirm vehicle fitment
Confirm vehicle fitment
Confirm fitment before ordering. Match the year, make, model, trim, engine, drivetrain and selected options shown on this page. If any detail is unclear, search your exact vehicle or contact us before checkout.
Shipping expectations
Shipping expectations
Availability and processing time can vary by manufacturer. Available shipping choices and charges appear at checkout. Tracking is emailed after shipment. Oversized, special-order and supplier-shipped items can require additional processing time.
Returns and cancellations
Returns and cancellations
Please review eligibility before purchase. Installed, used, electronic, custom, special-order and clearance items may have return restrictions. Contact us promptly if you need to change or cancel an order.
What’s included
What’s included
The product description and selected variant determine what is included. Items shown in lifestyle or installation photos are not included unless they are specifically listed in the description.
DIESELR Downpipe Back Exhaust - Single (2007.5-2010 GM 2500/3500 6....
DIESELR Downpipe Back Exhaust - Single (2007.5-2010 GM 2500/3500 6.6L Duramax LMM) - 5" / No Muffler is backordered and will ship as soon as it is back in stock.
Buy with confidence
Verify fitment, selected options, availability and included components before checkout. Secure payment options and order confirmation are provided at checkout.
Description
Description
Why This Downpipe-Back Exhaust Is Built for the LMM Duramax
The factory exhaust system on your 2007.5–2010 LMM Duramax is robbing your truck of airflow and holding back serious power. The DIESELR LMM Duramax Downpipe-Back Exhaust replaces restrictive stock piping with a mandrel-bent, heavy-duty system designed for lower EGTs, increased power, and an aggressive tone that says you mean business.
Built to Perform. Built to Last.
- T409 Stainless Steel: Corrosion-resistant and ready for harsh conditions
- Mandrel-Bent Tubing: No crimps or bottlenecks
- Leak-Free Fitment: Includes clamps and upgraded flanges
- Pre-Welded Hangers: For secure, hassle-free install
This is a downpipe-back exhaust that’s built for the long haul — no weak welds, no compromises.
Why Duramax Owners Love This Exhaust
- Better airflow for the LMM Duramax
- Lower exhaust gas temperatures (EGTs)
- Stronger horsepower and throttle response
- Deeper, louder diesel tone
If you're running a tuned truck, this is the system that lets it breathe.
Exact Fit for 2007.5–2010 Duramax LMM
Built for GM 2500/3500 HD trucks with the 6.6L Duramax LMM engine. Supports most cab/bed setups:
EC, CC / SB, LB, Dually
Note: No sensor bungs — ideal for custom race setups.
What’s in the Box
- Complete LMM Duramax Downpipe-Back Exhaust System
- Clamps, hangers, and flanges — all included
Legal Notice
For off-road and race use only. Requires aftermarket tuning. Not for street-driven trucks. Know your local laws before installing.
Why Dieselr?
Because we’re not guessing — we’re the source.
- Trusted by major resellers
- Backed by real diesel techs
- Fast shipping from multiple North American warehouses
When other sellers fall short, Dieselr delivers.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Product features
Use this section to highlight specific product features to your customers.
Product comparison grid
Add content here to explain a bit about the range of products on offer and which ones may be most suitable for your customers.
