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  • Flowmaster 11-18 GM 1500 143in. Wheelbase 6.2L Force II Cat-Back Exhaust System - 817603
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Flowmaster 11-18 GM 1500 143in. Wheelbase 6.2L Force II Cat-Back Exhaust System - 817603
Flowmaster 11-18 GM 1500 143in. Wheelbase 6.2L Force II Cat-Back Exhaust System - 817603
Flowmaster 11-18 GM 1500 143in. Wheelbase 6.2L Force II Cat-Back Exhaust System - 817603
Flowmaster 11-18 GM 1500 143in. Wheelbase 6.2L Force II Cat-Back Exhaust System - 817603
Flowmaster 11-18 GM 1500 143in. Wheelbase 6.2L Force II Cat-Back Exhaust System - 817603
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Load image into Gallery viewer, Flowmaster 11-18 GM 1500 143in. Wheelbase 6.2L Force II Cat-Back Exhaust System - 817603
Load image into Gallery viewer, Flowmaster 11-18 GM 1500 143in. Wheelbase 6.2L Force II Cat-Back Exhaust System - 817603
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Flowmaster 11-18 GM 1500 143in. Wheelbase 6.2L Force II Cat-Back Exhaust System - 817603

Exhaust, Mufflers & Tips Catback
Flowmaster
flo817603
Only 3 left
Not CARB compliant. Not legal for sale or use in California on emissions-controlled vehicles.
$1,002.80 $1,257.95
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. 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.) Features & Benefits 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
Flowmaster 98-03 Ford F150 American Thunder SS Cat-Back Exhaust System - 817663
Flowmaster 98-03 Ford F150 American Thunder SS Cat-Back Exhaust System - 817663
$1,199.95 $956.16
Flowmaster 11-22 Grand Cherokee 3.6L Force II Cat-Back SS Exhaust System - 817628
Flowmaster 11-22 Grand Cherokee 3.6L Force II Cat-Back SS Exhaust System - 817628
$1,257.95 $1,079.95
Flowmaster 11-18 GM 1500 143in. Wheelbase 6.2L Force II Cat-Back Exhaust System - 817603
SKU: flo817603
Product Details

Everything You Need To Know

Review product information, shipping and returns, and price-match details before you order.

Product Info

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.

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.)

Features & Benefits

  • 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
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Include the following:
Subject "Return for Order#"
Order Number
Part Number
Reason

Returns are eligible for up to 14 days from delivery of items. Accepted refunds can take up to 7-10 business days to process. All refunds are subject to a 25% restocking fee, if opened. Customer may be responsible for return shipping. If 14 days have gone by since your item was delivered, unfortunately we can’t guarantee you a refund or exchange. We reserve the right to deny any return request, based on provided information.

Alliance Racing is not responsible for ensuring part fitment. It is the responsibility of the purchaser to ensure the parts being ordered are the correct fitment for the vehicle intended. Alliance Racing will not accept any returns for incorrect fitment after product is opened.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Shipping

To return your product, mail your product to:
Alliance Racing LLC
8810 Twin Lakes Blvd
Tampa, FL 33614

In many cases, you will be responsible for shipping costs to return your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping will be deducted from your refund.

Depending on your location, the time it may take for your exchanged product to reach you may vary.

If you are shipping an item over $100, you should consider using a trackable shipping service and/or purchasing Shipping Insurance.

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Please note that there are cases when we cannot offer a price match, but we will do everything in our power to try to match it. Some manufacturers have Pricing Policies that we have to adhere to.

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