Description
Overview
The Flowmaster Flow FX Extreme Cat-Back Exhaust System is engineered for the 2007-2014 Toyota FJ Cruiser equipped with the 4.0-liter engine. Built around a Flow FX series muffler, this stainless steel cat-back setup is designed to deliver an aggressive-to-moderate exhaust note alongside increased performance, giving your FJ Cruiser a bolder sound and a freer-breathing exhaust path from the catalytic converter back.
At the heart of the system is 3.00-inch mandrel-bent 409 stainless steel tubing. The mandrel bends preserve a smooth, consistent inner diameter through every curve, allowing maximum exhaust flow, while the 409 stainless construction stands up to heat and the elements for lasting durability. The Flow FX muffler measures 36.50 inches in overall length with a center inlet, center 3.00-inch outlet, and a matching silver finish that carries through the tubing.
Built for the Trail
What sets the Extreme configuration apart is its turndown-style, dump exit positioned right after the muffler. By eliminating the traditional over-axle tailpipe, the system helps improve ground clearance and departure angle – a meaningful advantage when you’re pushing into more extreme off-road situations. It’s a purpose-built layout for FJ Cruiser owners who spend real time on the trail and want their exhaust to work with the terrain rather than against it.
Key Benefits
- Aggressive-to-moderate sound level from the Flow FX series muffler for a stronger, more assertive exhaust note
- 3.00-inch mandrel-bent 409 stainless steel tubing for maximum flow and long-term durability
- Turndown, dump-style exit that eliminates the over-axle tailpipe to improve ground clearance and departure angle off-road
- Single tail pipe design with a silver muffler and silver pipe finish
- CARB (California) compliant with Emission Code 5
- Includes all necessary hardware and reuses factory hangers and mounting locations
Easy, Bolt-On Installation
Flowmaster designed this cat-back to make installation straightforward. It uses the factory-mounting locations and includes all the necessary hardware, so you can bolt it on without cutting or fabricating custom brackets. The system mounts using factory hangers, keeping the fit clean and the process simple for a driveway or shop install.
Fitment
This Flow FX Extreme cat-back system is application-specific for the 2007-2014 Toyota FJ Cruiser with the 4.0-liter engine. The muffler is supplied as part of the complete kit (muffler included) and is not sold as a standalone part number.
Backed by Flowmaster’s Lifetime Limited Warranty, the Flow FX Extreme cat-back combines proven flow, rugged stainless construction, and an off-road-focused exit design into a single, ready-to-install upgrade for your FJ Cruiser. Please note this product carries a California Proposition 65 warning.
