17119 This American Thunder® crossmember-back exhaust system is custom designed for most 1964-1972 GM A-body cars and is for the person looking for a complete 2.50-inch dual exhaust system with a moderately aggressive exterior tone and a moderate interior sound. With easy fit in mind, these aluminized steel systems feature all mandrel-bent tubing, an H-pipe to equalize the exhaust pressures for maximum performance and deep sound and includes a pair of specially selected Super 40™ mufflers. The mandrel-bent 2.50-inch tailpipes tuck up out of the way for maximum clearance and offer you two choices of tailpipe exit styles. Like all Flowmaster® systems, benefits include improved throttle response, power, and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for an easy installation and is covered by our 3-year Limited Warranty. Features: Fits most 1964-1972 GM A-Bodies with V8 engines and aftermarket long tube headers. Includes Hangers and Hardware for Easy Installation Mandrel-bent 16-Gauge Aluminized Steel Tubing Two Exit Style Choices: Slash Cut or Turndown Moderate to Aggressive Exterior Exhaust Tone Built-in Balance Pipe Equalizes Pressures Super 40 Series Performance Mufflers Flowmaster Quality & Reliability Crossmember-Back System 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 Aluminized Steel Muffler Part Number 952548 Muffler Quantity 2 Muffler Series Super 40 Series Outlet Diameter (in) 2.5 Product Type Exhaust System Single Dual Dual Sound Level Aggressive / Moderate System Type Crossmember-back Tip Quantity Not Included Tubing Diameter (in) 2.5 UPC 700042014729 California Proposition 65 Required No Part Number 17119 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# 17119 Warranty for Part# 17119 Does Not Include Factory Manifold Downpipes or Header Reducer Cones