The fastest path from the turbo to the tip is through an MBRP front pipe. Bulking up exhaust flow. Get the most exhaust flow right from the turbo with our new down pipes. Replace your restrictive stock pipe with one of our mandrel bent 16 gauge pipes. Protected by our tough high temperature coating; these pipes deepen your diesels sound while lowering EGTs and providing quicker throttle response.Specifications: Bend Angle None Converter Quantity 0 Inlet Inside Diameter 4.000 in. Leg/Straight Length N/A Material Aluminized Mild Steel Pipe Material Aluminum Position Front Tube Diameter 4.000 in. WARNING CA Proposition 65 No Description_DES Armor Lite Front Pipe Description_EXT Armor Lite Front Pipe; Front; 4 in.; w/Flange; Aluminized; 4 in. Outlet Diameter Tip; Description_FAB Most Efficient System Available Description_FAB Convert your cat back to off road and back Description_MKT The fastest path from the turbo to the tip is through an MBRP front pipe. Bulking up exhaust flow. Get the most exhaust flow right from the turbo with our new down pipes. Replace your restrictive stock pipe with one of our mandrel bent 16 gauge pipes. Protected by our tough high temperature coating; these pipes deepen your diesels sound while lowering EGTs and providing quicker throttle response. Description_SHO Exhaust Pipe This Part Fits: Year Make Model Submodel Notes 2001 Chevrolet Silverado 2500 HD Base 2002 Chevrolet Silverado 2500 HD Base 2003 Chevrolet Silverado 2500 HD Base 2004 Chevrolet Silverado 2500 HD Base 2001 Chevrolet Silverado 2500 HD LS 2002 Chevrolet Silverado 2500 HD LS 2003 Chevrolet Silverado 2500 HD LS 2004 Chevrolet Silverado 2500 HD LS 2001 Chevrolet Silverado 2500 HD LT 2002 Chevrolet Silverado 2500 HD LT 2003 Chevrolet Silverado 2500 HD LT 2004 Chevrolet Silverado 2500 HD LT 2004 Chevrolet Silverado 2500 HD WT 2001 Chevrolet Silverado 3500 Base 2002 Chevrolet Silverado 3500 Base 2003 Chevrolet Silverado 3500 Base 2004 Chevrolet Silverado 3500 Base 2001 Chevrolet Silverado 3500 LS 2002 Chevrolet Silverado 3500 LS 2003 Chevrolet Silverado 3500 LS 2004 Chevrolet Silverado 3500 LS 2001 Chevrolet Silverado 3500 LT 2002 Chevrolet Silverado 3500 LT 2003 Chevrolet Silverado 3500 LT 2004 Chevrolet Silverado 3500 LT 2004 Chevrolet Silverado 3500 WT 2002 GMC Sierra 2500 HD Base 2003 GMC Sierra 2500 HD Base 2004 GMC Sierra 2500 HD Base 2001 GMC Sierra 2500 HD SL 2002 GMC Sierra 2500 HD SL 2001 GMC Sierra 2500 HD SLE 2002 GMC Sierra 2500 HD SLE 2003 GMC Sierra 2500 HD SLE 2004 GMC Sierra 2500 HD SLE 2001 GMC Sierra 2500 HD SLT 2002 GMC Sierra 2500 HD SLT 2003 GMC Sierra 2500 HD SLT 2004 GMC Sierra 2500 HD SLT 2003 GMC Sierra 2500 HD WT 2004 GMC Sierra 2500 HD WT 2002 GMC Sierra 3500 Base 2003 GMC Sierra 3500 Base 2004 GMC Sierra 3500 Base 2001 GMC Sierra 3500 SL 2002 GMC Sierra 3500 SL 2001 GMC Sierra 3500 SLE 2002 GMC Sierra 3500 SLE 2003 GMC Sierra 3500 SLE 2004 GMC Sierra 3500 SLE 2001 GMC Sierra 3500 SLT 2002 GMC Sierra 3500 SLT 2003 GMC Sierra 3500 SLT 2004 GMC Sierra 3500 SLT 2004 GMC Sierra 3500 WT