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 N/A Center Line Radius N/A Converter Quantity 0 Gauge 16 Inlet Inside Diameter 4.000 in. Leg/Straight Length N/A Material Stainless Steel Pipe Material 409 Stainless Steel Position Front Tube Diameter 4.000 in. WARNING CA Proposition 65 Yes WARNING CA Proposition 65 Message WARNING: This product can expose you to chemicals including nickel (metallic) and chromium (hexavalent compounds) which are known to the State of California to cause cancer and birth defects; or other reproductive harm Description_DES Armor Plus Front Pipe Description_EXT Armor Plus Front Pipe; Front; 4 in.; w/Flange; 409 Stainless Steel; 4 in. Outlet Diameter Tip; Description_FAB Most Efficient System Available Description_FAB Convert your cat back to off road and back Description_FAB Limited Lifetime Warranty 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