Flowmaster
Flowmaster 717890 Flow FX Cat-Back Exhaust System
Flowmaster 717890 Flow FX Cat-Back Exhaust System
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Description & Features
Flowmaster 717890 Flow FX Cat-Back Exhaust System
This Flowmaster® Flow FX® cat-back exhaust system for the 2019-2023 GM Silverado/Sierra 1500 trucks with the 6.2L engine and factory dual exhaust, is manufactured using durable 409 stainless steel throughout and features 3.5-inch to dual 2.50-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 +26 hp and +39 lb.ft at the rear wheels. This system fits all wheelbases and connects to the factory exhaust tips that exit in the rear bumper for a stealthy 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.
- Max Increases of up to 26 hp and 39 lb.ft. over the stock exhaust at the rear wheels
- 5-inch and 2.5-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
- Connects to the factory dual exhaust tips for a stealthy look
- Includes complete hardware and factory styled hangers in the stock locations for an easy installation
- Flow FX “straight through” performance muffler delivers a deep, moderate performance tone and improves exhaust flow
- Backed by Flowmaster’s Lifetime Limited Warranty
Specifications
| Brand | Flowmaster |
| California Proposition 65 | Yes |
| California Proposition 65 Chemical Name | Chromium (hexavalent compounds) |
| CARB (California) Compliant | Yes |
| Catalytic Converter Included | No |
| Catalytic Converter Quantity | 0 |
| Category | Exhaust |
| Clamping Type | Flat Band |
| Clamps Included | Yes |
| Emission Code | 5 |
| Exhaust Series | Flow FX |
| Exhaust Tip Connection | Clamp-On |
| Exhaust Tip Diameter | 2.50 |
| Exhaust Tip Intercooled | No |
| Exhaust Tip Quantity | 2 |
| Exhaust Tip Shape | Round |
| Exit Style | Dual Out Side |
| Finish | Natural |
| Gasket Or Seal Included | No |
| Grade Type | Performance |
| Hangers Included | Yes |
| Inlet Type | Clamp-On |
| Main Piping Diameter | 2.50 |
| Mount Type | Uses Factory Hangers |
| Mounting Bracket Included | No |
| Muffler Body Height | 5.00 |
| Muffler Body Length | 18.00 |
| Muffler Body Material | 409 Stainless Steel |
| Muffler Body Shape | Oval |
| Muffler Body Width | 8.00 |
| Muffler Color | Silver |
| Muffler Finish | Natural |
| Muffler Flanged Inlet | No |
| Muffler Flanged Outlet | No |
| Muffler Included | Yes |
| Muffler Inlet Connection | Slip-Fit |
| Muffler Inlet Inside Diameter | 3.50 |
| Muffler Inlet Location | Center |
| Muffler Inlet Outside Diameter | 3.13 |
| Muffler Outlet Connection | Slip-Fit |
| Muffler Outlet Diameter | 2.50 |
| Muffler Outlet Quantity | 2 |
| Muffler Overall Length | 24.00 |
| Muffler Part Number | Kit Only |
| Muffler Quantity | 1 |
| Muffler Series | Flow FX |
| Muffler Type | Absorption |
| part type | Exhaust System |
| Pipe Color | Silver |
| Pipe Material | 409 Stainless Steel |
| Product Type | Exhaust System |
| Sound Level | Moderate |
| Spring Bolt Kit Included | No |
| Sub Category | Exhaust and Tail Pipes |
| Tail Pipe Outlet Outside Diameter | 2.50 |
| Tail Pipe Quantity | Dual |
| Tail Pipe Tapered Outlet | No |
| Type | Cat-Back |
| Valve Included | No |
| Valve Type | Not Applicable |
| Warning | California Proposition 65 |
Packaging Information
Weight: 68 lbs
Dimensions: 55 x 25.13 x 12 IN
Safety
⚠ WARNING: This product can expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information visit www.P65Warnings.ca.gov
Warranty
Installation Instructions
⚠ Fitment Notes
- Fits 2/4 wheel drive and all wheelbases. Fits trucks with factory dual exhaust option and bumper cutouts only. Kit does not fit models with the factory active exhaust option.
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Vehicle Fitment
Vehicle Fitment
- 2020-2021 Chevrolet Silverado 1500 Custom Trail Boss
- 2019-2023 Chevrolet Silverado 1500 High Country
- 2020 Chevrolet Silverado 1500 LT Trail Boss
- 2022-2023 Chevrolet Silverado 1500 LT Trail Boss
- 2022 Chevrolet Silverado 1500 LTD Custom Trail Boss
- 2022 Chevrolet Silverado 1500 LTD High Country
- 2022 Chevrolet Silverado 1500 LTD LT Trail Boss
- 2022 Chevrolet Silverado 1500 LTD LTZ
- 2022 Chevrolet Silverado 1500 LTD RST
- 2019-2023 Chevrolet Silverado 1500 LTZ
- 2020-2023 Chevrolet Silverado 1500 RST
- 2019-2023 GMC Sierra 1500 AT4
- 2019-2023 GMC Sierra 1500 Denali
- 2022-2023 GMC Sierra 1500 Denali Ultimate
- 2022 GMC Sierra 1500 Limited AT4
- 2022 GMC Sierra 1500 Limited Denali
- 2022 GMC Sierra 1500 Limited SLT
- 2019-2023 GMC Sierra 1500 SLT
