Flowmaster 817726 Outlaw Cat-Back Exhaust Kit
$659.99 price checked August 2026
If you require a lifetime limited warranty and dual tailpipe exits, this kit is the right choice.
Where the Flowmaster Outlaw Kit Fits
The Flowmaster 817726 Outlaw Cat-Back Exhaust Kit is for owners seeking a high-volume performance upgrade, as it features a Super 10 Series performance muffler for increased exhaust flow.
A high-quality cat-back exhaust system provides a more resonant engine note and improved exhaust flow for a more visceral driving experience. It transforms the vehicle’s auditory signature while maintaining the structural integrity of the rear exhaust path.
The Flowmaster 817726 Outlaw Cat-Back Exhaust Kit achieves this result through its stainless steel construction and 4.00-inch black ceramic coated tips. These materials ensure the system maintains its finish and structural properties under high heat cycles.
Our comparison of the cat-back exhaust system options we evaluated for this category identifies this kit as a primary choice for those seeking a balance of style and flow. This review is for the owner who prioritizes a lifetime limited warranty and a 4.2 rating from 75 buyer ratings.
Performance enthusiasts might also consider our spec analysis of the Spec-D Catback.
How ExtremeSpec Auto picked: we started from the 200 most-reviewed cat-back exhaust system listings in our retail dataset, removed duplicates, accessories and off-category products, and 139 qualified. This product is one of 10 from that pool chosen for a full review. Our scores blend buyer satisfaction (60%), price position against comparable products (25%) and rating volume (15%). Specifications come from manufacturer listings and ratings from verified Amazon buyer reviews (data checked August 2026).
The Short Answer on the Flowmaster Outlaw Kit
Best for: you need a high-volume exhaust upgrade that utilizes a Super 10 Series performance muffler for increased flow.
The Flowmaster Outlaw Kit is a strong choice at the $659.99 mark.
- Pro: The stainless steel construction provides high resistance to corrosion and heat cycling over time.
- Pro: It features 4.00-inch black ceramic coated tips for a larger aesthetic profile.
- Pro: The kit includes both rear and side tailpipe exits to accommodate specific chassis layouts.
- Con: The 4.2 rating suggests some users may find the drone frequency at highway speeds less refined than premium titanium-wrapped systems.
- Con: The cat-back design limits the exhaust’s influence on primary engine backpressure compared to a full-system swap.
Don’t buy this if: your vehicle requires a full-system exhaust to achieve specific flow characteristics beyond the cat-back configuration.
Price assessment: The $659.99 price is a fair midpoint for a stainless steel kit with a Super 10 Series muffler.
ExtremeSpec Auto score: 7/10 (data-driven – see “How we picked” above)
Drivers of Japanese roadsters should see our guide to the best cat back exhaust system for mazda miata.
The Specifications That Matter
| Model Number | 817726 |
| Construction Material | Stainless steel |
| Muffler Type | Super 10 Series |
| Tip Diameter | 4.00-inch |
| Tip Finish | Black ceramic coated |
| Weight | 60.7 Pounds |
| Dimensions | 58.5 x 16.25 x 11.25 inches |
| Country of Origin | USA |
The stainless steel construction provides the material durability required for high-heat exhaust environments.
Where this sits in the buyer data: Among the 139 products screened for this category, this one’s 4.2 rating places it #61, on 75 ratings – above the 15-rating median of that group, so the average rests on more feedback than most of its comparables. On price it undercuts 52 of them.
Before You Buy: Flowmaster Outlaw Kit Checklist
The first thing to check is your vehicle’s specific chassis configuration to ensure the mounting points align with the Flowmaster Outlaw Kit’s design.
- ☐ Confirm your truck’s rear and side tailpipe exit points match the included dual-exit layout—Included rear and side tailpipe exits
- ☐ Verify your exhaust hangers and spacers provide the necessary clearance for the Super 10 Series performance muffler—Super 10 Series performance muffler
- ☐ Measure your current tip diameter to ensure a seamless swap to the 4.00-inch black ceramic coated tips—4.00-inch black ceramic coated tips
- ☐ Budget for a professional installation to ensure the stainless steel construction is secured to your frame without custom welding—Stainless steel construction
- ☐ Confirm your vehicle’s clearance allows for the specific bend radius of the Flowmaster Outlaw Kit—Flowmaster Outlaw Kit
You should not buy this product if your truck requires custom frame fabrication or non-standard welding to accommodate the mounting points.
Performance: What the Specs Deliver
Super 10 Series Muffler Design
The Super 10 Series performance muffler in the Flowmaster Outlaw Kit allows you to achieve a specific aggressive exhaust note while maintaining flow. This design supports a high-volume output that balances the “Outlaw” sound profile with the flow characteristics required for performance gains.
Regarding noise levels, the data does not specify decibel differences between idle and highway speeds. You should verify the specific drone frequency of the Super 10 Series with a specialist to ensure the resonance at cruising speeds matches your requirements for daily driving.
Dual Tailpipe Exit Configuration
The Flowmaster Outlaw Kit features a dual tailpipe exit configuration with 4.00-inch black ceramic coated tips. This setup provides the necessary exit area to reduce backpressure, supporting higher exhaust velocity compared to standard single-exit systems.
The dual exit layout ensures that the exhaust gases from the Super 10 Series muffler are distributed efficiently. This configuration allows you to maintain a consistent flow rate, which helps prevent the buildup of heat and pressure at the tailpipe ends.
Stainless Steel Build Quality
Stainless steel construction in the Flowmaster Outlaw Kit provides the structural integrity needed to withstand high heat cycles. This material choice ensures the system maintains its shape and structural soundness over long-term use in high-temperature environments.
The stainless steel build allows you to rely on the component’s resistance to corrosion compared to aluminized steel alternatives. You should confirm the specific grade of stainless steel with the manufacturer to determine its suitability for your specific climate and road salt exposure.
How the Flowmaster Outlaw Kit Compares to Alternatives
The Flowmaster Outlaw Kit provides a specific performance balance by utilizing a Super 10 Series performance muffler, which is designed to prioritize flow characteristics over the more restrictive baffle designs found in the Gibson 5627.
- The Flowmaster Outlaw Kit costs $10.04 more than the Flowmaster 717918 FlowFX Cat-Back Exhaust System.
- The Gibson 69545 Stainless Dual Split Rear Cat-Back Exhaust System holds a higher 4.6 rating compared to the 4.2 rating of the Flowmaster Outlaw Kit.
- The Invidia HS13LISG3S Q300 Cat-Back Exhaust System offers a lower price point of $696.14, costing $36.15 less than the Flowmaster Outlaw Kit.
- The Gibson 17306-B Black Ceramic Dual Extreme Cat-Back Exhaust System features 2.50 inch stainless mandrel bent tubing, while the Flowmaster Outlaw Kit utilizes a Super 10 Series muffler.
If you require a higher-rated system with a 4.6 score, the Gibson 69545 Stainless Dual Split Rear Cat-Back Exhaust System is the better pick for your upgrade.
The Flowmaster Outlaw Kit features a Super 10 Series performance muffler. Because the technical specifications do not provide acoustic frequency data, you should confirm the specific exhaust note with the manufacturer to determine if it produces a deep growl or a high-pitched rasp for your vehicle.
If you are looking for different configurations, explore the cat-back exhaust alternatives.
The Flowmaster Outlaw Kit: Remaining Questions
Is the Flowmaster Outlaw Kit worth the price for a slight volume increase?
If you prioritize a subtle acoustic change over maximum volume, the $659.99 price point represents a premium for the Super 10 Series performance muffler and stainless steel construction. You are paying for the specific engineering of the Flowmaster brand rather than a high-decibel output that might exceed your needs.
Does the ceramic coating on the Flowmaster Outlaw Kit hold up against road salt and heat?
The 4.00-inch black ceramic coated tips are designed to resist corrosion and maintain their finish under high heat cycles. To ensure long-term durability against heavy road salt, you should confirm the specific coating grade with a Flowmaster representative before purchase.
Will the Flowmaster Outlaw Kit fit my specific vehicle?
Yes, the Flowmaster Outlaw Kit is a cat-back exhaust system designed for specific vehicle models, so you must verify your exact year, make, and model before ordering. A professional installer should confirm your chassis has the necessary clearance for the rear and side tailpipe exits.
What is the warranty on the Flowmaster Outlaw Kit?
The Flowmaster Outlaw Kit includes a lifetime limited warranty on the stainless steel construction. This coverage provides long-term security for the investment compared to many entry-level exhaust systems.
Beginners can learn the common cat-back exhaust terms and specs.
Is the Flowmaster Outlaw Kit Right for You?
The Flowmaster Outlaw Kit suits 4 kinds of buyer and is the wrong choice for 3 jobs, listed below with the reason for each.
Who the Flowmaster Outlaw Kit is for, and what it does well
Who the Flowmaster Outlaw Kit suits
- Off-road truck owners — the dual rear and side tailpipe exits provide a rugged aesthetic and functional exhaust routing
- Custom truck builders — the 4.00-inch black ceramic coated tips provide a high-end visual finish for show vehicles
- Daily commuters seeking a custom sound — the Super 10 Series performance muffler provides a distinct exhaust note without being overly restrictive
- Long-term vehicle owners — the stainless steel construction and lifetime limited warranty ensure durability against corrosion and wear
What the Flowmaster Outlaw Kit handles well
- Customizing truck aesthetics — 4.00-inch black ceramic coated tips
- Preventing rust in harsh environments — stainless steel construction
- Adding a deep exhaust note — Super 10 Series performance muffler
- Improving visual symmetry — rear and side tailpipe exits
- Long-term ownership peace of mind — lifetime limited warranty
What the Flowmaster Outlaw Kit is the wrong choice for
- High-volume racing competitions — the Super 10 Series performance muffler is designed for street performance rather than maximum flow
- Chrome-heavy show builds — the black ceramic coated tips will clash with polished chrome aesthetics
- Ultra-compact vehicle fitment — the 4.00-inch tip size may be too large for small compact cars or subcompact trucks
What to budget alongside the Flowmaster Outlaw Kit, and what to skip
Worth buying at the same time
- Exhaust hangers — to secure the stainless steel components to the vehicle chassis
- Flange gaskets — to ensure a leak-free connection between the vehicle and the new kit
- Tailpipe clamps — to provide a secure fit for the rear and side tailpipe exits
- Tire shine — to maintain the clean look of the wheels near the new side tailpipe exits
- Fuel stabilizer — to maintain engine health while enjoying the new exhaust performance
What you can skip
- Exhaust tips — the 4.00-inch black ceramic coated tips are included in the kit
- Extended warranty — the product already comes with a lifetime limited warranty
- Chrome plating kits — the tips are already finished in black ceramic coating
Where to Buy the Flowmaster Outlaw Kit
These retailers sell Cat-back Exhaust System generally – we do not track which of them has this particular model in stock, so check availability and the current price with the retailer before making a trip.
- Jegs (online and physical stores) — extensive catalog and trade accounts
- ExtremeSpeedRacing (online only) — specialized performance exhaust inventory
- Amazon (online only) — broad range of aftermarket parts and easy returns
- eBay (online only) — access to various brands and open-box stock
- Summit Racing Equipment (online and physical stores) — wide selection of performance parts and specialist staff
- AmericanMuscle (online only) — large inventory of performance exhaust systems
You can compare these specs with our full review of the American Thunder Exhaust.
If you prefer a different tone, view our breakdown of the American Thunder Exhaust.
Final Verdict on the Flowmaster Outlaw Kit
If you want to replace your factory exhaust with a high-performance system that maintains a rugged aesthetic, the Flowmaster Outlaw Kit is the right choice at around $659.99.
The Flowmaster Outlaw Kit features 4.00-inch black ceramic coated tips and a Super 10 Series performance muffler, backed by a 4.2 rating from 75 buyers.
Skip it if: you require a quieter cabin profile or a system without the specific 4.00-inch tip diameter.