The Flowmaster® Flow FX Cat-Back Exhaust System is designed for 2014–2019* (Classic body) Chevrolet Silverado 1500 and GMC Sierra 1500 Crew Cab and Double Cab models equipped with 4.3L and 5.3L engines. This system delivers a deep, aggressive-to-moderate sound both inside and outside the vehicle while providing performance gains you expect from Flowmaster.

Constructed from durable 409 stainless steel, the system features mandrel-bent tubing flowing into a Flow FX straight-through performance muffler for improved exhaust flow and maximum power. Dual 2.50-inch tailpipes exit in front of the rear passenger tire and are finished with large 4.00-inch black ceramic-coated 304 stainless steel tips for a bold, muscle-truck appearance. Installation is easy using factory hanger locations, and all necessary hardware and instructions are included.

Fitment

• 2014–2019 Chevrolet Silverado 1500 (Crew Cab & Double Cab)
• 2014–2019 GMC Sierra 1500 (Crew Cab & Double Cab)
• Engines: 4.3L V6 & 5.3L V8
• Dual out same side
• Uses factory hanger locations

Features

• Flow FX straight-through performance muffler
• Large 4.00-inch black ceramic-coated stainless steel tips
• Mandrel-bent 409 stainless steel tubing
• Moderate-to-aggressive exterior tone
• Dyno-tuned for maximum performance
• Includes all clamps, hangers, and necessary hardware
• Lifetime limited warranty
• Easy at-home installation

Specifications

• Brand: Flowmaster
• Body Material: 409 Stainless Steel
• Muffler Series: FlowFX
• Muffler Type: Absorption
• Muffler Body: 14.00 in L × 9.00 in W × 4.00 in H
• Muffler Inlet: 3.00 in (Center)
• Muffler Outlet: Dual 2.50 in
• Tip Material: 304 Stainless Steel
• Tip Diameter: 4.00 in
• Tip Finish: Black Ceramic Coating
• Tip Quantity: 2
• Tail Pipe Quantity: 2
• Main Piping Diameter: 3.00 in
• Exit Style: Dual Out Same Side
• Mount Type: Uses factory hangers
• Sound Level: Aggressive / Moderate
• Part Type: Cat-Back Exhaust System
• Product Type: Exhaust System