--- product_id: 1380211 title: "817516 Outlaw Axle-back Exhaust System" brand: "flowmaster" price: "NZ$2940" currency: NZD in_stock: true reviews_count: 8 url: https://www.desertcart.nz/products/1380211-817516-outlaw-axle-back-exhaust-system store_origin: NZ region: New Zealand --- # 4.00-inch polished stainless steel tips Dyno tuned for max power 3.00-inch mandrel-bent tubing 817516 Outlaw Axle-back Exhaust System **Brand:** flowmaster **Price:** NZ$2940 **Availability:** ✅ In Stock ## Summary > 🔥 Turn heads and shake streets with the Outlaw roar! ## Quick Answers - **What is this?** 817516 Outlaw Axle-back Exhaust System by flowmaster - **How much does it cost?** NZ$2940 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/1380211-817516-outlaw-axle-back-exhaust-system) ## Best For - flowmaster enthusiasts ## Why This Product - Trusted flowmaster brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Aggressive Muscle Car Sound:** Unleash a deep, booming exhaust note that commands attention - • **Effortless Installation Kit:** Includes hangers & hardware for a quick, hassle-free upgrade - • **Maximized Performance Gains:** Dyno-tuned to extract every ounce of power from your 5.0L Mustang GT - • **Polished Stainless Steel Tips:** Eye-catching 4.00-inch dual tips embossed with Flowmaster branding - • **Race-Proven Mandrel-Bent Tubing:** Precision 3.00-inch stainless steel for optimal flow and durability ## Overview The Flowmaster 817516 Outlaw Axle-back Exhaust System is a premium upgrade designed specifically for 2011-2012 Ford Mustang GT 5.0L models. Featuring 3.00-inch mandrel-bent stainless steel tubing and large 4.00-inch polished tips, it delivers an aggressive, race-proven exhaust tone while boosting performance. Complete with all necessary hangers and hardware, this dyno-tuned system ensures an easy installation and maximum power gains, making it the ultimate choice for muscle car enthusiasts craving that iconic roar and street presence. ## Description This Outlaw axle-back exhaust system is specifically designed for 2011-2012 Ford Mustang GT with the 5.0L engine and replaces the original rear mounted mufflers with factory style connections. With easy fit in mind, these 3.00-inch mandrel-bent exhaust systems include a pair of our race-proven Outlaw mufflers for an aggressive exterior and interior sound, and with the maximum amount of power gain possible from an axle-back system. The hangers use the factory locations and the system is finished off with a pair of 4.00-inch polished stainless steel tips embossed with the Flowmaster name. Designed for an quick and easy installation, these systems include all necessary parts, hardware, detailed instructions. Review: Great Product, A reason why the rating is so high. A must have for a 5.0 - Car: Mustang 2012 GT, 5.0, Premium, Automatic Purchase/Shipping: Intl Shipping from desertcart was fantastic and cheap. Quality: O.K. Black part easily scratched/dented. Handle with care. Tips look great, clamps in perfect position. Installation: Nice and easy, expect taking the factory parts off. Needs lots of WD40 and manpower to get them off. Sound: Slightly Booming during low revs (under 3K). Push on it and it sounds like a beast! Will shake up everything, including rattling the car interior. Don't punch it around cops for sure. Slight drone around 2K, sounds better when windows down, otherwise echoes in cabin. Very Very happy with the Sound/Quality/Value perspective. THANK YOU desertcart Review: Very easy install/ the sound is AMAZING! - Checked out every clip/ review on the net for axle back systems. I have had many hot cars from Ram Air firebirds 68 69, 99 TA ws6, twin turbo dodge stealth, thunderbird supercoupe, etc.... My favorite had been my RAIII firebird with long tubes, and only resonators. It was so deep loud, and thrilling just firing it up. Never got around to modding my 99TA, and always regretted that. I have a 2011 GT500 PP, which is the most capable car I have owned. It sounded great, and would be enough for any sane person. I on the other hand longed for that deep rumble/ scream of a muscle car. I did the install in my garage it took me longer than others, but I am old, and arthritic, as well as stopped for lunch. The hardest part of the install is taking the old muffs off. Without a lift I believe the easiest way to remove is to 1st loosen the muffler to pipe clamp just at the axle until muffler and pipe can separate, then remove back muffler rod from rubber grommet. Let old mufflers hang down so you can easily get to hanger bolts (three on left, two on right) take down old muffs with forward hanger brackets attached. reverse process with outlaws. VERY EASY. The sound is amazing! Loud and deep, and if you feel the need to stand on the "FUN pedal" it is fantastic! Best 2 hour mod I have ever done. I would say if you are planning on long tubes, or changing out cats, it would probably end up being too loud. If you are only going to do the axle backs they are perfect! ## Features - Includes Hangers and Hardware for an Easy Installation - 3.00-inch Mandrel-bent Stainless Steel Tubing - Large 4.00-inch Polished Stainless Steel Tips - Dyno Tuned for Maximum Performance - Aggressive Exterior Exhaust Note ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B005J6SMQE | | Best Sellers Rank | #2,002,942 in Automotive ( See Top 100 in Automotive ) #81 in Automotive Replacement Axle-Back Exhaust Systems | | Brand | Flowmaster | | Brand Name | Flowmaster | | Compatible with Vehicle Type | Car | | Customer Reviews | 4.6 out of 5 stars 36 Reviews | | Global Trade Identification Number | 00700042025176 | | Included Components | Flowmaster 817516 Axle-back System 409S - Dual Rear Exit - Outlaw - Aggressive Sound | | Item Type Name | Flowmaster 817516 Axle-back System 409S - Dual Rear Exit - Outlaw - Aggressive Sound | | Item Weight | 10.45 Kilograms | | Manufacturer | Flowmaster | | Manufacturer Part Number | 817516 | | Manufacturer Warranty Description | Check with the manufacturer | | Material | Plastic | | Material Type | Plastic | | Model Number | 817516 | | OEM Equivalent Part Number | 817516 | | UPC | 700042025176 | | Unit Count | 1.0 Count | | Vehicle Service Type | Car | ## Images ![817516 Outlaw Axle-back Exhaust System - Image 1](https://m.media-amazon.com/images/I/51Lts010ynL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great Product, A reason why the rating is so high. A must have for a 5.0 *by A***I on April 16, 2015* Car: Mustang 2012 GT, 5.0, Premium, Automatic Purchase/Shipping: Intl Shipping from Amazon was fantastic and cheap. Quality: O.K. Black part easily scratched/dented. Handle with care. Tips look great, clamps in perfect position. Installation: Nice and easy, expect taking the factory parts off. Needs lots of WD40 and manpower to get them off. Sound: Slightly Booming during low revs (under 3K). Push on it and it sounds like a beast! Will shake up everything, including rattling the car interior. Don't punch it around cops for sure. Slight drone around 2K, sounds better when windows down, otherwise echoes in cabin. Very Very happy with the Sound/Quality/Value perspective. THANK YOU AMAZON ### ⭐⭐⭐⭐⭐ Very easy install/ the sound is AMAZING! *by S***D on August 18, 2013* Checked out every clip/ review on the net for axle back systems. I have had many hot cars from Ram Air firebirds 68 69, 99 TA ws6, twin turbo dodge stealth, thunderbird supercoupe, etc.... My favorite had been my RAIII firebird with long tubes, and only resonators. It was so deep loud, and thrilling just firing it up. Never got around to modding my 99TA, and always regretted that. I have a 2011 GT500 PP, which is the most capable car I have owned. It sounded great, and would be enough for any sane person. I on the other hand longed for that deep rumble/ scream of a muscle car. I did the install in my garage it took me longer than others, but I am old, and arthritic, as well as stopped for lunch. The hardest part of the install is taking the old muffs off. Without a lift I believe the easiest way to remove is to 1st loosen the muffler to pipe clamp just at the axle until muffler and pipe can separate, then remove back muffler rod from rubber grommet. Let old mufflers hang down so you can easily get to hanger bolts (three on left, two on right) take down old muffs with forward hanger brackets attached. reverse process with outlaws. VERY EASY. The sound is amazing! Loud and deep, and if you feel the need to stand on the "FUN pedal" it is fantastic! Best 2 hour mod I have ever done. I would say if you are planning on long tubes, or changing out cats, it would probably end up being too loud. If you are only going to do the axle backs they are perfect! ### ⭐⭐⭐⭐ At 2k rpm it is kind of annoying (cruising in 5th gear) *by D***N on September 11, 2016* Went on a 2011 Mustang GT. One muffler came with a large scratch across it. But whatever, it goes under the car. These things are LOUD. At 2k rpm it is kind of annoying (cruising in 5th gear). But under heavy acceleration these are just great. Very aggressive sound and construction is well done. The hardest part of the installation is getting the old mufflers off, which isn't all that hard. I've gotten quite a few compliments about the sound of my car. Great product imo. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.nz/products/1380211-817516-outlaw-axle-back-exhaust-system](https://www.desertcart.nz/products/1380211-817516-outlaw-axle-back-exhaust-system) --- *Product available on Desertcart New Zealand* *Store origin: NZ* *Last updated: 2026-09-18*