RideBuildList logoRIDEBUILDLIST

MBRP Exhaust MBRP 4" Armor Lite Cat Back Exhaust, 2001-2005 LB7/LLY

Fits 2001-2005 6.6L Duramax V8 (LB7) · 6.6L Duramax V8 (LLY)

MBRP Exhaust MBRP 4" Armor Lite Cat Back Exhaust, 2001-2005 LB7/LLY for 2001-2005 Chevrolet Silverado 2500HD/3500HD (6.6L Duramax V8 (LB7), 6.6L Duramax V8 (LLY))

We earn a commission if you buy through links on this page. Prices are the same for you. Full disclosure

gain
no published figure
price
$614.99
at eBay
install
2/5 difficulty · ~1-2 hrs, bolt-on
shipping weight
66 lbs
listed by MBRP Exhaust, box included · replaces a factory part, adds only the difference
Buy at eBayAdd to build

where to buy · 2 retailers tracked

  • DmaxStorechecked Sep 29$584.99view
  • eBaychecked Oct 19$614.99view

A cat-back exhaust replaces the pipes and muffler from the catalytic converter to the tip. It changes how the truck sounds and drops a little weight. This one is the MBRP 4" Armor Lite Cat Back Exhaust, 2001-2005 LB7/LLY, listed to fit the 2001-2005 Chevrolet Silverado 2500HD/3500HD with the 6.6L Duramax V8 (LB7) or 6.6L Duramax V8 (LLY).

why this one — Cat-backs are a sound and looks upgrade first. Treat any power claim as unproven unless the maker publishes a dyno sheet. DmaxStore lists it at $584.99, and the fitment above is what the listing itself states, not a guess.

Questions about this category

F-150: does anyone publish a horsepower number for a cat-back exhaust?F-150: what does a cat-back exhaust cost?F-150: how hard is it to install a cat-back exhaust, and how long does it take?
pairs well with
aFe Power Momentum HD Cold Air Intake System w/ Pro 10R FilterBanks Power Derringer Tuner (66652)
Price-drop alert for this part

One email if this part drops in price at a tracked retailer. Real numbers, no spam, stop anytime.

No published gain figure for this part, and nothing here is a guarantee. Price is a list price and can lag the retailer; confirm at checkout. See how we check a price and our affiliate disclosure.

Independent site. Not affiliated with, endorsed by, or sponsored by any vehicle manufacturer, parts manufacturer, or retailer named on this site. Vehicle and brand names are used only to describe compatibility. Gains shown are manufacturer claims, community estimates, or independent tests, labeled by source on every part, and are not guarantees.