Your 5.3L feels a little too quiet for what it is, this is the upgrade that changes the experience without changing your routine. The Flow FX Direct Fit Muffler System delivers a deeper, more confident V8 tone with the simplicity and value of a direct fit replacement. It is the perfect first step for drivers who want a meaningful change without the complexity of a full system. Start it up and the sound has more presence right away. Drive it around town and you get a richer tone that feels premium, not obnoxious. Tip into the throttle and the SUV finally sounds like it matches what it can do. Then, when you settle into steady highway speed, the sound profile is tuned to help minimize and eliminate unwanted in-cabin drone so your daily drive stays comfortable. It is the kind of upgrade that your passengers can live with and you will appreciate every time you drive. Designed for select late model GM SUVs, this system is engineered for straightforward installation using factory style mounting points. It is built from stainless steel for long term durability and backed by the Flowmaster Limited Lifetime Warranty. If you want the emotional payoff of better sound with the practicality of an easy install, Flow FX is the right move.
Flowmaster Flowmaster Flow FX Direct Fit Muffler 718218
Specifications:
| Brand | Flowmaster |
| California Proposition 65 | Yes |
| California Proposition 65 Chemical Name | Chromium (hexavalent compounds) |
| California Proposition 65 Chemical Name | Nickel (Metallic) |
| California Proposition 65 Required | Yes |
| Category | Exhaust |
| Color | Natural |
| Emission Code | 5 |
| Exhaust Series | Flow FX |
| 200 | Natural |
| 353 | No |
| 3390 | Performance |
| 618 | No |
| Inlet Inside Diameter | 3.26 |
| Inlet Location | Offset |
| 620 | 1 |
| 596 | Slip-Fit |
| Material | 409 Stainless Steel |
| Mount Type | Uses Factory Hanger |
| 630 | 409 Stainless Steel |
| Muffler Quantity | 1 |
| Muffler Series | Flow FX |
| 631 | Oval |
| 1174 | Absorption |
| Outlet Outside Diameter | 3.50 |
| 623 | 1 |
| 598 | Slip-Fit |
| Overall Length | 20.00 |
| part type | Exhaust Muffler Assembly |
| Product Type | Exhaust System |
| Sound Level | Moderate/Mild |
| Sub Category | Mufflers |
| System Type | Direct-fit Muffler |
| Valve Actuator Included | No |
| Valve Included | No |
| Valve Type | Not Applicable |
| Warning | California Proposition 65 |
| Description_SHO | FFX DFM 21+ GM 5.3L |
| Description_INV | 2125 TAHOE 53L GAS FFX DIRECT FIT |
| Description_ASC | Fits both Single Out Rear (SOR) and Dual Out Rear (DOR) factory configurations |
| Description_DES | Flowmaster Flow FX Direct Fit Muffler |
| Description_EXT | 21-26 Tahoe, Yukon, Yukon XL, Suburban 5.3L Flow FX Direct Fit Muffler Factory Single (SOR) and Dual Exit (DOR) |
| Description_MKT | Your 5.3L feels a little too quiet for what it is, this is the upgrade that changes the experience without changing your routine. The Flow FX Direct Fit Muffler System delivers a deeper, more confident V8 tone with the simplicity and value of a direct fit replacement. It is the perfect first step for drivers who want a meaningful change without the complexity of a full system. Start it up and the sound has more presence right away. Drive it around town and you get a richer tone that feels premium, not obnoxious. Tip into the throttle and the SUV finally sounds like it matches what it can do. Then, when you settle into steady highway speed, the sound profile is tuned to help minimize and eliminate unwanted in-cabin drone so your daily drive stays comfortable. It is the kind of upgrade that your passengers can live with and you will appreciate every time you drive. Designed for select late model GM SUVs, this system is engineered for straightforward installation using factory style mounting points. It is built from stainless steel for long term durability and backed by the Flowmaster Limited Lifetime Warranty. If you want the emotional payoff of better sound with the practicality of an easy install, Flow FX is the right move. |
| Description_FAB | Tuned to minimize and eliminate unwanted in-cabin drone Deep, refined Flow FX tone engineered for 5.3L GM SUVs Max dyno gains of 7 hp and 5 lb-ft torque at the rear wheels Simplified Installation: Utilizes stock hanger location Simplified Installation: Simple hand tools and no welding required Backed by Flowmaster's Limited Liftemtime Warranty |
This Part Fits:
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2021 | Chevrolet | Suburban | Commercial | |
| 2022 | Chevrolet | Suburban | Commercial | |
| 2023 | Chevrolet | Suburban | Commercial | |
| 2024 | Chevrolet | Suburban | Commercial | |
| 2021 | Chevrolet | Suburban | LS | |
| 2022 | Chevrolet | Suburban | LS | |
| 2023 | Chevrolet | Suburban | LS | |
| 2024 | Chevrolet | Suburban | LS | |
| 2025 | Chevrolet | Suburban | LS | |
| 2026 | Chevrolet | Suburban | LS | |
| 2021 | Chevrolet | Suburban | LT | |
| 2022 | Chevrolet | Suburban | LT | |
| 2023 | Chevrolet | Suburban | LT | |
| 2024 | Chevrolet | Suburban | LT | |
| 2025 | Chevrolet | Suburban | LT | |
| 2026 | Chevrolet | Suburban | LT | |
| 2021 | Chevrolet | Suburban | Premier | |
| 2022 | Chevrolet | Suburban | Premier | |
| 2023 | Chevrolet | Suburban | Premier | |
| 2024 | Chevrolet | Suburban | Premier | |
| 2025 | Chevrolet | Suburban | Premier | |
| 2026 | Chevrolet | Suburban | Premier | |
| 2021 | Chevrolet | Suburban | RST | |
| 2022 | Chevrolet | Suburban | RST | |
| 2023 | Chevrolet | Suburban | RST | |
| 2024 | Chevrolet | Suburban | RST | |
| 2025 | Chevrolet | Suburban | RST | |
| 2026 | Chevrolet | Suburban | RST | |
| 2021 | Chevrolet | Suburban | Z71 | |
| 2022 | Chevrolet | Suburban | Z71 | |
| 2023 | Chevrolet | Suburban | Z71 | |
| 2024 | Chevrolet | Suburban | Z71 | |
| 2025 | Chevrolet | Suburban | Z71 | |
| 2026 | Chevrolet | Suburban | Z71 | |
| 2021 | Chevrolet | Tahoe | Commercial | |
| 2022 | Chevrolet | Tahoe | Commercial | |
| 2023 | Chevrolet | Tahoe | Commercial | |
| 2024 | Chevrolet | Tahoe | Commercial | |
| 2025 | Chevrolet | Tahoe | Commercial | |
| 2026 | Chevrolet | Tahoe | Commercial | |
| 2021 | Chevrolet | Tahoe | LS | |
| 2022 | Chevrolet | Tahoe | LS | |
| 2023 | Chevrolet | Tahoe | LS | |
| 2024 | Chevrolet | Tahoe | LS | |
| 2025 | Chevrolet | Tahoe | LS | |
| 2026 | Chevrolet | Tahoe | LS | |
| 2021 | Chevrolet | Tahoe | LT | |
| 2022 | Chevrolet | Tahoe | LT | |
| 2023 | Chevrolet | Tahoe | LT | |
| 2024 | Chevrolet | Tahoe | LT | |
| 2025 | Chevrolet | Tahoe | LT | |
| 2026 | Chevrolet | Tahoe | LT | |
| 2023 | Chevrolet | Tahoe | Police | |
| 2024 | Chevrolet | Tahoe | Police | |
| 2021 | Chevrolet | Tahoe | PPV | |
| 2022 | Chevrolet | Tahoe | PPV | |
| 2023 | Chevrolet | Tahoe | PPV | |
| 2024 | Chevrolet | Tahoe | PPV | |
| 2025 | Chevrolet | Tahoe | PPV | |
| 2026 | Chevrolet | Tahoe | PPV | |
| 2021 | Chevrolet | Tahoe | Premier | |
| 2022 | Chevrolet | Tahoe | Premier | |
| 2023 | Chevrolet | Tahoe | Premier | |
| 2024 | Chevrolet | Tahoe | Premier | |
| 2025 | Chevrolet | Tahoe | Premier | |
| 2026 | Chevrolet | Tahoe | Premier | |
| 2021 | Chevrolet | Tahoe | RST | |
| 2022 | Chevrolet | Tahoe | RST | |
| 2023 | Chevrolet | Tahoe | RST | |
| 2024 | Chevrolet | Tahoe | RST | |
| 2025 | Chevrolet | Tahoe | RST | |
| 2026 | Chevrolet | Tahoe | RST | |
| 2021 | Chevrolet | Tahoe | SSV | |
| 2022 | Chevrolet | Tahoe | SSV | |
| 2023 | Chevrolet | Tahoe | SSV | |
| 2024 | Chevrolet | Tahoe | SSV | |
| 2025 | Chevrolet | Tahoe | SSV | |
| 2026 | Chevrolet | Tahoe | SSV | |
| 2021 | Chevrolet | Tahoe | Z71 | |
| 2022 | Chevrolet | Tahoe | Z71 | |
| 2023 | Chevrolet | Tahoe | Z71 | |
| 2024 | Chevrolet | Tahoe | Z71 | |
| 2025 | Chevrolet | Tahoe | Z71 | |
| 2026 | Chevrolet | Tahoe | Z71 | |
| 2021 | GMC | Yukon | AT4 | |
| 2022 | GMC | Yukon | AT4 | |
| 2023 | GMC | Yukon | AT4 | |
| 2024 | GMC | Yukon | AT4 | |
| 2025 | GMC | Yukon | AT4 | |
| 2026 | GMC | Yukon | AT4 | |
| 2025 | GMC | Yukon | Elevation | |
| 2026 | GMC | Yukon | Elevation | |
| 2021 | GMC | Yukon | SLE | |
| 2022 | GMC | Yukon | SLE | |
| 2023 | GMC | Yukon | SLE | |
| 2024 | GMC | Yukon | SLE | |
| 2021 | GMC | Yukon | SLT | |
| 2022 | GMC | Yukon | SLT | |
| 2023 | GMC | Yukon | SLT | |
| 2024 | GMC | Yukon | SLT | |
| 2021 | GMC | Yukon XL | AT4 | |
| 2022 | GMC | Yukon XL | AT4 | |
| 2023 | GMC | Yukon XL | AT4 | |
| 2024 | GMC | Yukon XL | AT4 | |
| 2025 | GMC | Yukon XL | AT4 | |
| 2026 | GMC | Yukon XL | AT4 | |
| 2025 | GMC | Yukon XL | Elevation | |
| 2026 | GMC | Yukon XL | Elevation | |
| 2021 | GMC | Yukon XL | SLE | |
| 2022 | GMC | Yukon XL | SLE | |
| 2023 | GMC | Yukon XL | SLE | |
| 2024 | GMC | Yukon XL | SLE | |
| 2021 | GMC | Yukon XL | SLT | |
| 2022 | GMC | Yukon XL | SLT | |
| 2023 | GMC | Yukon XL | SLT | |
| 2024 | GMC | Yukon XL | SLT |