{"product_id":"flowmaster-99-06-gm-trucks-5-3l-flowfx-doss-cat-back-exhaust-system","title":"Flowmaster 99-06 GM 5.3L FlowFX D\u0026S Cat-Back For Chevy Silverado\/GMC Sierra 1500 HD (99-07) (717990)","description":"\u003cp\u003eThe Flowmaster FlowFX DOSS Cat-Back Exhaust System is a high-performance exhaust upgrade designed for 1999-2006 GM 1500 trucks, including the 2007 1500 Classic models. Constructed entirely from durable 409 stainless steel, it features 3.00-inch to dual 2.50-inch mandrel-bent pipes that optimize exhaust gas flow for improved performance. Equipped with a FlowFX \"straight-through\" muffler, this system delivers a moderate to mild sound level while maximizing horsepower and torque gains, with dyno results showing an increase of +14 hp and +13 lb-ft at the rear wheels. The dual 4.00-inch black ceramic tips add a stylish, custom appearance. The system utilizes factory hanger locations and includes all hardware and instructions for straightforward installation, backed by Flowmaster's Lifetime Limited Warranty.\u003c\/p\u003e\n\u003cp\u003eThis exhaust system is designed specifically for 1999-2006 GM 1500 trucks with 4.3, 4.8, or 5.3-liter engines, including Crew Cab with a 5.5-foot bed and Extra Cab with a 6.5-foot bed. It is a direct bolt-on replacement that enhances performance and sound for street and daily driving applications. The system exits on the passenger side, in front of the rear wheel, providing a balanced and aggressive look. Suitable for enthusiasts seeking increased power, improved exhaust flow, and a custom aesthetic, this system is ideal for upgrading stock exhaust setups on compatible GM trucks.\u003c\/p\u003e","brand":"Flowmaster","offers":[{"title":"Default Title","offer_id":52748122063135,"sku":"717990","price":675.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0229\/3877\/files\/f94f2c267f2842ab79cfe0ca91e187b8L.jpg?v=1786061410","url":"https:\/\/shop.wheelflip.com\/products\/flowmaster-99-06-gm-trucks-5-3l-flowfx-doss-cat-back-exhaust-system","provider":"WheelFlip","version":"1.0","type":"link"}