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Knuckles: Heavy-duty nodular iron design
6 2005 – 2007
the chrome/black plating is guaranteed for life not to rust
torque and lower EGT's
Kit includes (1) 1 Inch FK Uniball and (1) Retaining Ring
Flowmaster 70 Series 3" Center In 2.25" Dual Out Universal Chambered Muffler 2016-2018-2-8l-lwn-duramax Knuckles: Heavy-duty nodular iron designThe 70 series utilizes Flowmaster's Delta Flow technology and an enlarged case for improved sound control along with mileage and power gains. Perfect for use on trucks, SUV's, RVs, tow vehicles and high performance street cars where space allows. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability. Features: Minimal interior resonance Mild to stock exterior exhaust tone Improved Horsepower, Torque and Engine Efficiency