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Flowmaster
Force Ii Cat-Back Exhaust System 2011-2019 Chevrolet/Gmc 2500/3500Hd Trucks With 6.0L Engine Fits Crew Cab/Short Bed Moderate To Mild Sound Flowmaster
SKU: F00L 817451
Moderate — 2–4 hours
Description
Part #: 817451
This Force II Cat-back exhaust system is specifically designed for 2011-2019 GM Silverado/Sierra 2500HD/3500HD crew cab/short bed trucks with the 6.0L engine. This emissions legal system is constructed from 3.50-inch mandrel-bent stainless steel tubing flowing into a 50 Series Big Block performance muffler for a mild to moderate tone inside and moderate sound level outside the truck. The tailpipe exits behind the right rear tire, which is ideal for towing applications, and is finished off with a large 4.00-inch polished stainless steel tip. The system uses the factory hanger locations making for a quick and easy installation. Includes all necessary parts, hardware, and detailed instructions for an easy installation you can do at home. Covered by our Limited Lifetime Warranty. Note: Fits 2 and 4 wheel drive Crew Cab models with the 6.5ft bed.
Features:
- Includes Hangers and Hardware for and Easy Installation
- Mandrel Bent 16 Gauge 409 Stainless Steel Tubing
- Large 4.00-inch Polished 304 Stainless Steel Tip
- Limited Lifetime Warranty
- 3.50-inch Mandrel bent Stainless Steel Tubing
- Mild to Moderate Exterior Exhaust Tone
- Connects After Factory Catalytic Converter
- Incl. Hangers and Hardware For Easy Installation
- 50 Series "Big Block" Performance Muffler
- Connects After Factory Catalytic Converter
- Uses the Factory Hanger Locations
- Single Out Side Exit
- Moderate Exterior Exhaust Tone
- Dyno Tuned for Maximum Performance
- Quick and Easy Easy Installation
- Premium Flowmaster Quality
- Lifetime Limited Warranty
Force II Cat Back System | Single | Single Side Exit | Incl. 3.5 in. Tubing/50 Series (TM) Big Block Muffler/4 in. Logo Embossed Stainless Tip | 409 Stainless Steel
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Fitment
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Specifications
| Brand | Flowmaster |
| Part Number | F00L 817451 |
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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