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Home / Exhaust / Catback / Flowmaster 11-18 GM 1500 143in. Wheelbase 6.2L Force II Cat-Back Exhaust System
Flowmaster 11-18 GM 1500 143in. Wheelbase 6.2L Force II Cat-Back Exhaust System
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Flowmaster

Flowmaster 11-18 GM 1500 143in. Wheelbase 6.2L Force II Cat-Back Exhaust System

PART 817603CATEGORY Catback
$1,117.95
MSRP $1,257.95You save $140.00
$1,117.95
1

Product information

Manufacturer information. Check the part number and installation requirements for your vehicle.

Supplier details checked 2026-09-23 · Test catalog

Product description

Fits 2011-2018 Chevrolet Silverado/GMC Sierra 1500 trucks with 6.2L engine.

Flowmaster Force II Cat-back Exhaust System

Features

50 Series Big Block Performance Muffler

Large 3.50-inch Mandrel-bent Tubing

Dyno Tuned For Maximum Performance

Uses the Factory Hanger Locations

Stainless Steel Construction

Lifetime Limited Warranty

Delta Flow Technology

Flowmaster Quality

Manufacturer notes

Fits 2011-2018 Chevrolet Silverado/GMC Sierra 1500 trucks with 6.2L engine. Crew Cab/Short bed & Extra Cab/Standard bed models (143-inch wheelbase.)

Supplier category
Exhaust, Mufflers & Tips
Supplier subcategory
Catback
UPC / barcode
700042027651
Units per product
1
Supplier Proposition 65 status
Y
Supplier EPA status
N/A
Air freight prohibited
No
Not CARB approved
No
CARB acknowledgement required
Yes
Freight delivery required
No
Powersports product
No
More manufacturer information

Other product descriptions

Flowmaster 11-18 GM 1500 143in. Wheelbase 6.2L Force II Cat-Back Exhaust System

1118 GM 1500 143 WB 62L FII SOS

SYS 11-18 GM 1500 14

About the manufacturer

This Force II® Cat-back stainless steel exhaust system is designed for 2011-2018 Chevrolet Silverado and GMC Sierra 1500 trucks with the 6.2L engine. Features include large 3.50-inch mandrel-bent tubing flowing into a Flowmaster 50 Series Big Block™ muffler for a muscular exterior sound, while the built-in Helmholtz chamber helps control the interior resonance. The system uses the factory hanger locations for an easy installation and is finished off with a highly polished 4.00-inch 304 stainless steel tip embossed with the Flowmaster® logo. This bolt-on system delivers noticeable performance gains while offering moderate interior and exterior sound levels and is covered by our Lifetime Limited Warranty.

Additional manufacturer information

SYS 11-18 GM

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