Flowmaster HP-2 Series " Shorty" Muffler- 2.25" Inlet, 2.25" Outlet - 12" Case - 409S 4704021-20-M Metallic Substrate

Metallic Substrate

No need to remove wires and hoses

GM LS3/L76 kit

560 in Shank Diameter

Flowmaster HP-2 Series " Shorty" Muffler- 2.25" Inlet, 2.25" Outlet - 12" Case - 409S 4704021-20-M Metallic SubstrateConstructed with an 12" long, painted 409S outer shell, and 409 Internal components. Available in 2. 00", 2. 25", and 2. 50" inlet outlet sizes. Featuring the same the same technology as the standard HP 2 mufflers, the 409S HP 2 "Shorties" have a shorter case length of 12 inches and a 4. 00 X 5. 50 inch width. Due to their Cool Shell Technology they can be placed in virtually any location under the vehicle. The 409S HP 2 "Shorties" feature a painted