Like regular Hedman TURBO Mufflers, these Hedder Mufflers are high quality turbo-style mufflers. They come from the factory with a 12" head pipe welded on, and an integrated collector.
 
Part # ProductTube DiameterCollector StyleCase LengthColorEngineExhaust System DiaFinishHead StyleLengthOutlet DiameterMaterial Media
25660 Turbo Hedder Muffler for 2-1/4" Exhaust System; 3" 3-Bolt Triangular Collector 3-Bolt Gasket Style2-1/4"
Photo
$65.22
25662 Turbo Hedder Muffler for 2-1/2" Exhaust System; 3" 3-Bolt Triangular Collector 3-Bolt Gasket Style2-1/2"
Photo
$66.78
25667 TURBO HEDDER MUFFLER 2 1/2" EXHAUST; 3" BALL & SOCKET STYLE HEADER COLLECTOR Ball & Socket14"2-1/2"Galvanized Case28"2-1/2"Galvanized Steel
$80.07
25666 TURBO HEDDER MUFFLER 2 1/4" EXHAUST; 3" BALL & SOCKET STYLE HEADER COLLECTOR 1-1/4"Ball & Socket14"2-1/4"Galvanized Case28"2-1/4"Galvanized Steel
$78.50
 
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http://hedman.com/images/ePIM/original/25662.jpg