Flowmaster

Flowmaster Force II Exhaust System | 07-13 Silverado Sierra 1500

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$1,749.00 CAD

~~$1,999.00 CAD~~ $1,749.00 CAD

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Flowmaster 817492 Force II Cat-Back Stainless Steel Exhaust System for 2007-2013 Chevrolet Silverado & GMC Sierra 1500

Engineered to deliver improved exhaust scavenging, enhanced engine efficiency, and a refined performance sound, the Flowmaster 817492 Force II cat-back exhaust system provides a direct bolt-on upgrade for 2007–2013 Chevy Silverado 1500 and GMC Sierra 1500 pickup trucks. Constructed from 409S stainless steel, this 3.00-inch single to 2.50-inch dual mandrel-bent assembly flows directly into a heavy-gauge Super 50 Series muffler, producing a deep exterior exhaust note while maintaining a mild interior cab tone. Exhaust engineering specialists note that mandrel-bent stainless tubing eliminates internal crimping and flow restrictions, decreasing backpressure to optimize throttle response during heavy trailer towing.

Designed for versatile installation and extreme winter road durability, the Force II system features multi-position tailpipe exits, allowing drivers to route exit tips straight out the rear under the bumper or behind the rear tires. Exiting behind the rear tires is particularly beneficial when towing campers or boat trailers, preventing exhaust fumes and soot from accumulating on towed cargo. The entire assembly utilizes factory hanger positions and includes 3.00-inch polished dual-wall stainless steel tips. Domestic shipping across North America ensures complete supply chain transparency, rapid regional transit, and zero unexpected duty or customs fees.

Technical Specifications

Specification Parameter	Engineering Rating / Detail
Exhaust System Type	Cat-Back (Catalytic Converter-Back System)
Tubing Diameter & Type	3.00-in. Inlet to Dual 2.50-in. Mandrel-Bent Tubing
Muffler Series & Tone	Flowmaster Super 50 Series (Mild Interior / Moderate Exterior)
Material & Finish	409S Stainless Steel Tubing with Polished Stainless Tips
Exhaust Exit Configuration	Dual Split Rear or Dual Side Exit (Behind Rear Tires)
Exhaust Tip Dimensions	3.00-in. Diameter Polished Dual-Wall Stainless Steel
Emissions Compliance	50-State Emissions Legal (Retains Factory Catalysts)
Warranty Coverage	Flowmaster Lifetime Limited Warranty

Vehicle Fitment

2007–2008 Chevrolet Silverado & GMC Sierra 1500 (4.8L V8 & 5.3L V8; 2WD & 4WD; Excludes Classic Body Style & Extended Cab 8-ft Bed)
2009–2013 Chevrolet Silverado & GMC Sierra 1500 (5.3L V8; Extended Cab 6.5-ft Bed & Crew Cab 5.5-ft Bed Only)
Fitment Note: Does not fit 2007 Classic body models, 6.0L/6.2L engine options, or Extended Cab models equipped with an 8-foot long bed.

Installation Notes

Direct 100% bolt-on kit; uses factory OE rubber isolators and frame hanger locations for a straightforward installation.
Estimated installation duration: 1.5 to 2.5 hours using standard shop hand tools and exhaust hanger removal pliers.
Includes complete hardware kit, band clamps, and selectable exit tailpipe sections for customized exit placement.
Torque all heavy-duty band clamps to 40 ft-lbs upon final alignment to ensure leak-free seal execution.

Frequently Asked Questions

Does the Flowmaster Force II 817492 system produce loud interior drone while driving?

No, the included Super 50 Series muffler is specifically chambered to minimize interior cabin drone while giving the vehicle a smooth, deep, and moderate exhaust note outside.

Can I exit the exhaust tips out the side instead of straight under the bumper?

Yes, the 817492 kit includes selectable tailpipe configurations allowing you to exit tips straight out the back or out the sides behind the rear tires, ideal for preventing fume buildup on towed trailers.