aFe 4" Cat-Back w/ Muffler Race Exhaust GM 2011-2015 LML
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The AFE 49-4402X 4" MACH Force XP Race Exhaust System for your 2011-2016 GM 6.6L Duramax is engineered to perform in the most extreme environments. This system is constructed from mandrel bent 4" 409 stainless steel tubing for maximum flow, increased horsepower, increased torque and lower EGTs. MACH Force XP exhaust systems are the perfect combination of performance, fit and value.
- 4" Stainless Steel Construction
- Off-Road, Race Exhaust System
- Includes Hardware, Hangers & Clamps For Install
Warning: This free-flow race exhaust system requires the use of an aftermarket performance programmer with off-road tuning.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
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