817497 Wake up the performance and sound hidden in your 3.7L V6-powered 2011-2014 Ford Mustang with a Flowmaster Force II® exhaust system. These moderate sounding systems retain the dual exhaust system outlets and are designed to replace the original rear mounted mufflers using factory hangers and connections. With easy fit in mind, these systems are mandrel-bent stainless steel for maximum performance and include specially tuned pair of 60 Series™ performance mufflers with large 3.50-inch polished stainless steel tips. As a Force II system, it delivers a moderate exterior tone and a mild interior tone and is suited to the enthusiast who wants a subtle but distinctive performance exhaust note. Like all Flowmaster® systems, the benefits include improved throttle response, power and mileage. The exhaust is a true bolt-on system, includes everything you need to easily install at home with basic hand tools and is covered by our Lifetime Limited Warranty. Features: Includes Hangers and Hardware for an Easy Installation Mandrel-bent 16 Gauge Stainless Steel Tubing Dyno Tuned for Maximum Performance Moderate Exterior Exhaust Tone 60 Series Performance Mufflers Lifetime Limited Warranty Uses the Factory Hangers About Flowmaster Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound. SPECS 2WD/4WD 2WD Brand Flowmaster Emission Code 5 Exhaust Series Force II Exit Position Dual Out Rear Heat Shield No Inlet Diameter (in) 2.25 Material 409 Stainless Steel Muffler Part Number Kit Only Muffler Quantity 2 Muffler Series 60 Series Delta Flow Outlet Diameter (in) 2.5 Product Type Exhaust System Single Dual Dual Sound Level Moderate System Type Axle-back Tip Diameter (in) 4 Tip Quantity 2 Tubing Diameter (in) 2.25 UPC 700042024209 California Proposition 65 Chemical Name Chromium (hexavalent compounds) Nickel (Metallic) California Proposition 65 Required Yes Part Number 817497 Instructions for Part# 817497 Warranty for Part# 817497 Fits 2011-2014 Ford Mustang with 3.7L V6 engine.