MBRP 4 Inch Cat Back Exhaust System Single Side T409 Stainless Steel For 2006-2007 Silverado/Sierra 2500/3500 Duramax S6012409

Why this MBRP part

This MBRP 4 in. cat-back exhaust system is built for 2006-2007 Silverado/Sierra 2500/3500 Duramax. MBRP mandrel-bends every tube so the bends stay round and smooth, which keeps exhaust moving freely and gives the truck MBRP's signature tone.

Armor Plus parts are made from T409 stainless steel, which resists rust that eats through the pipe and cleans up easily, and MBRP backs the series with a lifetime warranty. MBRP does note that road salt and winter treatments can still speed up surface corrosion.

• Mandrel-bent tubing for smooth, unrestricted flow

Key specs (per MBRP)

What's included

• MBRP cat-back exhaust system (4 in. tubing)
• 5 in. OD polished tip

MBRP install instructions: PDF

Fitment notes

• Fits (per MBRP): 2006-2007 Chevrolet Silverado 2500/3500 Classic 6.6L Duramax Extended Cab/Crew Cab
• Fits (per MBRP): 2006-2007 GMC Sierra 2500/3500 Classic 6.6L Duramax Extended Cab/Crew Cab
• Some cutting may be needed during install.
• Not sure it fits? Send us your year, engine, cab and bed length and we'll confirm before you order.

Professional install available at Powertech Diesel, Idaho Falls — call 208-542-7793.