Hedman's 3-Bolt flange hedder reducers are for use with Hedman Hedders fitted with 3-bolt gasketed collectors. Many of Hedman's newer hedder models utilize a ball & socket style collector. If your Hedman Hedders have thisstyle of collector they do not require a gasket. Available in mild steel or aluminized. These reducers do not have built-in O2 sensor bungs. If you require O2 bungs, we recommend the use of Hedman's O2 Sensor reducers.
 
Part # ProductExhaust System DiaFinishMaterialReducer Outlet Diameter Media
21100 3" 3-Bolt Flange Hedder Reducers; 2-1/4" Exhaust System; Mild Steel 2-1/4"RawMild Steel2.25"
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$24.35
21101 2-1/2" 3-Bolt Flange Hedder Reducers; 2" Exhaust System; Mild Steel 2"RawMild Steel2"
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$23.50
21103 3" 3-Bolt Flange Hedder Reducers; 2-1/2" Exhaust System; Mild Steel 2-1/2"RawMild Steel2.5"
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$25.07
21104 3-1/2" 3-Bolt Flange Hedder Reducers; 2-1/2" Exhaust System; Mild Steel 2-1/2"RawMild Steel2.5"
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$29.78
21105 2-1/2" 3-Bolt Flange Hedder Reducers; 2-1/2" Exhaust System; Mild Steel 2-1/2"RawMild Steel2.5"
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$25.07

Hedman Hedder reducers are sold in pairs, and come complete with all the necessary bolts, washers and gaskets. Manufactured from 16g material.

 
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http://hedman.com/images/ePIM/original/21101.jpg
http://hedman.com/images/ePIM/original/21103.jpg
http://hedman.com/images/ePIM/original/21104.jpg
http://hedman.com/images/ePIM/original/21105.jpg