{"product_id":"flowmaster-20-25-gm-2500hd-6-6l-ccb-flowfx-dos-exhaust-system","title":"Flowmaster 20-25 GM 2500HD 6.6L CCB FlowFX DOS Exhaust System","description":"This Flowmaster® Flow FX® cat-back exhaust system for the 2020-2025 GM 2500HD\/3500HD trucks with the 6.6-liter gas engine is manufactured using durable 409 stainless steel throughout and features 3.50 to dual 3.00-inch mandrel bent pipes for better exhaust gas flow, and a Flow FX \"straight-through\" muffler is used for a moderate sound level and maximum performance. Maximum increases on the dyno revealed +9 hp and +10 lb-ft at the rear wheels. This system exits out both sides, behind the rear wheels with 4.50-inch black ceramic tips for added style and a custom look. The system uses all the existing factory hanger locations and includes installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's Lifetime Limited Warranty.\nFits 2020-2025 GM 2500HD\/3500HD 6.6-Liter Gas, Cat-Back, Dual Side Exit, Stainless Steel Exhaust System\n2020-2025 GM 2500HD\/3500HD Trucks with 6.6-liter gas engines. Fits 2 \u0026amp; 4-wheel drive, Crew Cab with 6.5-foot bed only. Does not fit 5th wheel towing packages.  Does not fit ZR2 and AT4X packages.\n\u003cul\u003e\n  \u003cli\u003eFlow FX “straight through” performance muffler delivers a deep, aggressive to moderate performance tone and improves exhaust flow\u003c\/li\u003e\n  \u003cli\u003e3.50 to dual 3.00-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability\u003c\/li\u003e\n  \u003cli\u003eIncludes complete hardware and factory styled hangers in the stock locations for an easy installation\u003c\/li\u003e\n  \u003cli\u003eMax increases of up to 9 hp and 10 lb-ft over the stock exhaust at the rear wheels\u003c\/li\u003e\n  \u003cli\u003e4.50-Inch black ceramic coated tips add a custom look to the truck\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2020 Chevrolet Silverado 2500 HD\u003cbr\u003e\n2020 Chevrolet Silverado 3500 HD\u003cbr\u003e\n2020 GMC Sierra 2500 HD\u003cbr\u003e\n2020 GMC Sierra 3500 HD\u003cbr\u003e\n2021 Chevrolet Silverado 2500 HD\u003cbr\u003e\n2021 Chevrolet Silverado 3500 HD\u003cbr\u003e\n2021 GMC Sierra 2500 HD\u003cbr\u003e\n2021 GMC Sierra 3500 HD\u003cbr\u003e\n2022 Chevrolet Silverado 2500 HD\u003cbr\u003e\n2022 Chevrolet Silverado 3500 HD\u003cbr\u003e\n2022 GMC Sierra 2500 HD\u003cbr\u003e\n2022 GMC Sierra 3500 HD\u003cbr\u003e\n2023 Chevrolet Silverado 2500 HD\u003cbr\u003e\n2023 Chevrolet Silverado 3500 HD\u003cbr\u003e\n2023 GMC Sierra 2500 HD\u003cbr\u003e\n2023 GMC Sierra 3500 HD\u003cbr\u003e\n2024 Chevrolet Silverado 2500 HD\u003cbr\u003e\n2024 Chevrolet Silverado 3500 HD\u003cbr\u003e\n2024 GMC Sierra 2500 HD\u003cbr\u003e\n2024 GMC Sierra 3500 HD\u003cbr\u003e\n2025 Chevrolet Silverado 2500 HD\u003cbr\u003e\n2025 Chevrolet Silverado 3500 HD\u003cbr\u003e\n2025 GMC Sierra 2500 HD\u003cbr\u003e\n2025 GMC Sierra 3500 HD\u003cbr\u003e\n2026 Chevrolet Silverado 2500 HD\u003cbr\u003e\n2026 Chevrolet Silverado 3500 HD\u003cbr\u003e\n2026 GMC Sierra 2500 HD\u003cbr\u003e\n2026 GMC Sierra 3500 HD\u003cbr\u003e\n\u003cbr\u003e\n\u003cbr\u003e\nAir Freight Prohibited: false\u003cbr\u003e\nNot Carb Approved: false\u003cbr\u003e\nCarb Acknowledgement Required: true\u003cbr\u003e\nLtl Freight Required: false\u003cbr\u003e\nProp 65: Y\u003cbr\u003e\nPart Type: automotive\u003cbr\u003e\nEpa: N\/A\u003cbr\u003e\nUnits Per Sku: 1","brand":"Flowmaster","offers":[{"title":"Default Title","offer_id":49296844194011,"sku":"flo718111","price":949.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/8559\/1003\/files\/aee5d789823fdf14f0a6219514afc3ecL.jpg?v=1789172995","url":"https:\/\/hnbperformance.com\/products\/flowmaster-20-25-gm-2500hd-6-6l-ccb-flowfx-dos-exhaust-system","provider":"Hellnback Offroad \u0026 Performance","version":"1.0","type":"link"}