817409 This American Thunder® exhaust system comes as a complete true dual crossmember-back exhaust for your 1968-1972 GM A-body with a V8 engine. These dual exhaust systems feature 2.50-inch mandrel-bent stainless steel tubing for maximum performance, includes a built-in H-pipe/balance tube flowing into a pair of large case Super 40® mufflers that deliver an aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The 2.50-inch tailpipes exit at a slight angle down under the rear bumper for a strong muscular look. The system includes all hangers and necessary hardware for installation. Like all Flowmaster® systems, the benefits include improved throttle response, power and mileage and is covered by our Lifetime Limited Warranty. Features: H-pipe Crossover for Maximum Power and Deep Tone Super 40 Series Mufflers for Deep Powerful Sound Mandrel-bent 16-gauge Stainless Steel Tubing Includes Hangers and Hardware for Installation Aggressive Exterior Exhaust Tone Crossmember-back True Dual Exhaust System Does Not Include Header Reducers or Downpipes for Factory Manifolds Lifetime Limited Warranty 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 American Thunder Exit Position Dual Out Rear Heat Shield No Inlet Diameter (in) 2.5 Material 409 Stainless Steel Muffler Part Number Kit Only Muffler Quantity 2 Muffler Series Super 40 Series Outlet Diameter (in) 2.5 Product Type Exhaust System Single Dual Dual Sound Level Aggressive System Type Crossmember-back Tip Quantity Not Included Tube Diameter 2.5 inch Tubing Diameter (in) 2.5 Type of Exhaust Crossmember-back UPC 700042024056 California Proposition 65 Chemical Name Chromium (hexavalent compounds) Nickel (Metallic) California Proposition 65 Required Yes Part Number 817409 EMISSIONS 5 This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations. TECH RESOURCES Instructions for Part# 817409 Warranty for Part# 817409 Fits 1968-1972 GM A-Bodies with V8 engine.
