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Flowmaster
Flowmaster 19-25 GM 1500 5.3L FLowFX Direct Fit Active Muffler - 717911
Flowmaster 19-25 GM 1500 5.3L FLowFX Direct Fit Active Muffler - 717911
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Flowmaster
SKU:
FLO717911
|
- UPC:
- 700042039388
$999.95
$1,124.95
(You save
$125.00
)
Other Flowmaster kits for this car
Fits these vehicles
- 2019-2021 Chevrolet Silverado 1500Custom
- 2019-2026 Chevrolet Silverado 1500Custom Trail Boss, High Country, LT, LT Trail Boss, LTZ
- 2023-2026 Chevrolet Silverado 1500PPV
- 2019-2026 Chevrolet Silverado 1500RST
- 2019-2021 Chevrolet Silverado 1500SSV
- 2019-2026 Chevrolet Silverado 1500WT
- 2022 Chevrolet Silverado 1500 LTDHigh Country, LT, LT Trail Boss, LTZ, RST, SSV, WT
- 2019-2021 GMC Sierra 1500AT4, Base
- 2019-2026 GMC Sierra 1500Denali, Elevation
- 2022-2026 GMC Sierra 1500Pro
- 2019-2026 GMC Sierra 1500SLE, SLT
- 2022 GMC Sierra 1500 LimitedDenali, Elevation, Pro, SLE, SLT
Part details
- Part number
- FLO717911
- Manufacturer part number
- 717911
- UPC
- 700042039388
- Brand
- Flowmaster
- Part type
- Muffler
- Prop 65
- ⚠️ WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov
- Special order
- Yes — ordered in for you; allow extra time
- Instructions
- Installation instructions (PDF)
- Material
- Stainless steel
- In the box
- A High Quality Valve
Installation guide (from Flowmaster)
Hosted by Flowmaster. Follow the maker's instructions and torque specs.
- Box size:
- 15.00 × 9.30 × 49.80 (in)
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- Klarna
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- Snap Finance
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Out of stock
Flowmaster 19-25 GM 1500 5.3L FlowFX Cat-Back Exhaust System - 717893
$999.95$1,124.95Free Shipping
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Out of stock
Flowmaster 19-25 GM 1500 5.3L FlowFX Cat-Back Exhaust System - 717894
$949.95$1,068.95Free Shipping
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Flowmaster 19-25 GM 1500 Truck 5.3L FlowFX Extreme Cat-Back Exhaust System - 717977
$399.95$449.95Free Shipping
Introducing the new Flow FX® Active Dual-mode muffler featuring our new W.A.V.E. Technology™ (Wireless Active Valve Exhaust™) for all 2019-2026 GM Silverado/Sierra 1500 (new body style) with 5.3L engine. This direct-fit replacement muffler has split personalities with a nice performance tone over the stock exhaust system, thanks to the Flowmaster® Flow FX performance muffler. The system also features a high quality wireless controlled actuator valve on the Power Chamber® redirecting exhaust through the turn down, giving you that deep open exhaust sound with just a push of a button. System features include mandrel-bent stainless steel construction leading into the Power Chamber, followed by a round Flow FX performance muffler that easily connects to the factory tailpipe. The Power Chamber houses a wireless controlled valve with a large 3.00-inch turndown dump style tailpipe letting everyone know who the Boss is once activated. Other system features include actuator motor, control unit, two wireless key fobs, all necessary wiring, hardware, and detailed instructions. Maximum dyno gains of 9 hp and 11 lb.ft. at the rear wheels. Note: Fits 2019 (New body) 2/4 wheel drive and all wheelbases.
Fits 2019-2026 (New body) GM Silverado/Sierra 1500 5.3L, 2/4 WD, All Wheelbases. - Aggressive to moderate sound
Flowmaster Flow FX Direct Fit Dual Mode Muffler with Active Valve
- Deep Performance Tone from "Straight-through" Flow FX Muffler
- Max Dyno Gains of 9 hp and 11 lb.ft. of Torque
- Features Flowmasters W.A.V.E. Technology
- Very Aggressive Active By-Pass Sound
- Mandrel-bent Stainless Steel Tubing
- Detailed Installation Instructions
- Wireless Controlled Actuator Motor
- Direct-fit Replacement Muffler
- Includes a High Quality Valve
- Stainless Steel Construction
- Includes Two Key Fobs
- Clearance Item:
- N
- LTL:
- N
- MPN:
- 717911
- Proposition 65:
- Y
- Special Order:
- Y
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Flowmaster
Flowmaster 19-25 GM 1500 5.3L FLowFX Direct Fit Active Muffler - 717911
Flowmaster 19-25 GM 1500 5.3L FLowFX Direct Fit Active Muffler - 717911 FAQ
It is listed for: 2019-2021 Chevrolet Silverado 1500; 2019-2026 Chevrolet Silverado 1500; 2023-2026 Chevrolet Silverado 1500 and more (see the full list above). Pick your vehicle on this page to check your exact year and trim.
- A High Quality Valve
The maker's installation guide is on this page — see Installation guide under the part details for the step-by-step and the torque figures. Work on level ground with the car properly supported, and torque every fastener to the maker's figure. If the job is beyond your tools, any shop that does this kind of work can fit it.
The sound depends on the muffler and resonator design. A cat-back with a resonator stays closer to stock; an axle-back changes the tone more than the volume. Look for the maker's sound notes or a clip on this page.
Cat-back and axle-back systems bolt to the factory connection points. Headers and downpipes replace the factory pipe at the engine and may need new gaskets and hardware; see What's in the box.
A cat-back or axle-back needs no tune. Headers and downpipes change what the oxygen sensors see, so many cars need a tune or a sensor spacer to avoid a warning light.
Drone depends on the muffler and resonator design and your car's gearing. Systems with a resonator or an X-pipe drone less, and the maker notes when a system is built to be quiet at cruise.
An axle-back or cat-back is a jack-stands job with the right sockets and penetrating oil for rusty bolts. Headers and downpipes take more room and time, and a lift helps.
Most systems include the clamps and gaskets they need; see What's in the box. Reuse a factory gasket only if it is undamaged.
Yes — monthly options show right under the Add to Cart button. Affirm, Klarna, PayPal Pay Later and Snap Finance are offered at checkout, and checking what you qualify for does not affect your credit score.
Install and care: mufflers
Before you start
- Soak the factory flange bolts and hangers in penetrating oil the day before.
- Lay out the sections and clamps against What's in the box before anything goes under the car.
Do
- Hang the whole system loosely first, line it up, then tighten the clamps from the front back.
- Check for leaks at every joint with the engine running before the final tightening.
Don't
- Don't tighten any clamp fully until the whole system hangs straight.
- Don't reuse a crushed or torn factory gasket.