Flowmaster American Thunder High Clearance Cat-Back for 2007-2018 Jeep Wrangler JK - 817674

The Flowmaster American Thunder Cat-Back Exhaust System, part number 817674, is designed for 2007-2018 Jeep Wrangler JK models with 3.8L or 3.6L engines in both 2-door and 4-door configurations. Built from durable 409 stainless steel, this high-clearance exhaust relocates the muffler from the factory transverse position to behind the catalytic converter and uses a Super HP-2 muffler for an aggressive to moderate performance tone. A 2.5-inch mandrel-bent tailpipe is tucked high beneath the rear bumper and finished with a 3-inch polished stainless steel tip to maximize off-road ground clearance.

Key Features & Specs:

• Series: Flowmaster American Thunder
• Type: High-clearance cat-back exhaust system
• Vehicle Platform: Jeep Wrangler JK
• Engine Compatibility: 3.8L and 3.6L
• Body Compatibility: 2-door and 4-door
• Material: 409 stainless steel
• Tubing Diameter: 2.5-inch
• Tubing Construction: Mandrel-bent stainless steel
• Muffler: Flowmaster Super HP-2
• Muffler Technology: Laminar Flow
• Sound Level: Aggressive to moderate
• Exit Style: Single rear exit
• Exhaust Tip: 3-inch polished 304 stainless steel
• Tip Style: Angled, rolled-edge
• High-Clearance Design: Tailpipe is tucked high beneath the rear bumper for improved off-road clearance
• Muffler Location: Relocated behind the factory catalytic converter
• Drivetrain: 2WD and 4WD
• Installation: Uses factory hanger locations
• Included: Clamps, hardware, and installation components
• Part Number: 817674
• Warranty: Flowmaster Lifetime Limited Warranty

Fitment:

Fits applicable 2007-2018 Jeep Wrangler JK models equipped with the 3.8L or 3.6L engine.

• 2007-2017 Jeep Wrangler
• 2007-2017 Jeep Wrangler Unlimited
• 2018 Jeep Wrangler JK
• 2018 Jeep Wrangler JK Unlimited

Applicable trims include Rubicon, Sahara, Sport, Sport S, X, Anniversary Editions, and other configurations listed in the manufacturer fitment data.

Fitment Note: Because the tailpipe is tucked high beneath the rear bumper for maximum clearance, Flowmaster recommends using an aftermarket metal rear bumper.