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  • Ram (6.4) Exhaust Muffler Assembly
    SKU: 717941
    • Dyno-proven max gains of 13 hp and 11 lb-ft at the rear wheels for better acceleration and towing
    • Built entirely from 409 stainless steel for years of trouble-free, corrosion-resistant service
    • Straight-through Flow FX absorption muffler delivers great sound with no drone at a moderate level
    • Direct-fit design uses all factory hanger locations and hardware for easy at-home installation
    • Fits 2014-2026 RAM 2500/3500 6.4L HEMI trucks in both 2WD and 4WD
    • Backed by Flowmaster’s Lifetime Limited Warranty
  • Chevrolet, GMC (5.3) Exhaust System Kit
    SKU: 718201
    • Direct bolt-on cat-back exhaust for Chevrolet / GMC 5.3L 4WD — installs on factory hangers with no fabrication
    • Built from 409 stainless steel with a 16-gauge pipe wall for corrosion resistance and long-term durability
    • Flow FX muffler delivers a Moderate/Mild tone — aggressive under throttle, refined at cruise
    • Dual exit layout with angled 4.00-inch tips and embossed logo for a sport-focused rear look
    • CARB (California) compliant and backed by the Flowmaster Limited Lifetime Warranty
  • Chevrolet, GMC (6.6) Exhaust Muffler Assembly
    SKU: 718155
    • Adds max dyno gains of 7 hp and 5 lb-ft at the rear wheels for better acceleration and towing
    • Full 409 stainless steel construction resists corrosion for years of trouble-free performance
    • Straight-through Flow FX absorption muffler delivers an aggressive tone with no interior drone
    • Direct-fit design uses factory hangers and connections for easy DIY installation
    • Includes flat band clamps, hardware, and instructions; backed by Flowmaster’s Lifetime Limited Warranty
    • Fits both 2WD and 4WD 2020-2026 GM 2500HD/3500HD trucks with the 6.6L gas engine
  • Ford (6.2, 6.8, 7.3) Exhaust Muffler Assembly
    SKU: 718102
    • Dyno-proven max gains of 12 hp and 11 lb-ft at the rear wheels for stronger acceleration and towing
    • Full 409 stainless steel muffler, pipe, and tubing for years of trouble-free, corrosion-resistant service
    • Direct-fit design uses all factory hanger locations for an easy at-home installation
    • Flow FX straight-through absorption muffler delivers an aggressive yet moderate tone
    • Includes flat-band clamps, hardware, and installation instructions — plus Flowmaster’s Lifetime Limited Warranty
    • Fits 2017-2026 Ford F250/F350 Super Duty 6.2L, 6.8L & 7.3L gas engines in both 2WD and 4WD