Constructed 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 technolgy 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 409S outer shell, and 409S internal construction. Available in 2. 00, 2. 25, and 2. 50-inch inlet/outlet diameters, there is a model available to suit your needs. The HP-2 line offers a wide variety of applications from rock crawling to award winning customs. Just ask the winner of the 2007 Ridler Award, Troy Trepanier of Rad Rides by Troy!Pit Stop USA offers Flowmaster HP-2 Series "Shorty" Muffler- 2" Inlet, 2" Outlet - 12" Case - 409S 12012409 at low everyday prices. Be sure to check out all of our products from Hushpower including Hushpower HP-2 Series Mufflers.