60 Performance Exhaust 409S Stainless Exhaust Systems Part No. Application 717894 19-24 Silverado/Sierra 1500 FlowFX 817895 19-24 Silverado/Sierra 1500 American Thunder 817854 19-24 Silverado/Sierra 1500 Outlaw 817689 14-19 Silverado 1500 / Sierra 1500 Outlaw 817669 14-19 Silverado / Sierra American Thunder • Choices ranging from mild to aggressive tone • Dyno-proven performance gains • Dual exit and single exit options available • Mufflers, tips, and accessories also available • 409 Ss with limited lifetime warranty • Polished 304 stainless steel or black powder-coated exhaust tips Part No. 39539 - 19-24 Silverado/Sierra 1500, 5.3L Thrush® Turbo Exhaust Muffler Ultra FLO™ Cat-Back Exhaust System • 100% Aluminized coated shell for long life • Tri-flow design provides that thrush® classic sound • All mufflers are reversible for maximum flexibility • Time proven spun locked heads for leak free seal • Proven reverse flow design • Stainless steel construction for lifelong protection • Performance - designed to maximize exhaust flow • Engineered to last - 3 inch mandrel bent stainless steel tubing • Crf technology absorbs unwanted interior resonance while maintaining a deep performance tone • Bolt-on for easy installation Ultra FLO™ Welded Performance Muffler • Stainless steel construction • Straight-through design ensures unrestricted exhaust flow and reduces back pressure • Crf technology absorbs unwanted interior resonance while maintaining a deep performance tone 17000 Series 17700 Series
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