Flow Fx Extreme Cat-Back Exhaust System Fits 2003-2024 Toyota 4Runner 4.0-Liter, Flow Fx Extreme 3.00 Inch Stainless Steel Cat-Back Exhaust System - Flowmaster - 717972

Flowmaster introduces our Flow FX Extreme stainless steel cat-back exhaust system for the 2003-2024 Toyota 4Runner with the 4.0-liter engine. This system uses a Flow FX series muffler for an aggressive sound level and increased performance.

3.00-inch mandrel bent 409 stainless steel tubing allows for maximum exhaust flow and durability. The system has a turndown style, dump exit right after the muffler to eliminate the over-axle tailpipe. This elimination of the tailpipe helps improve ground clearance and departure angle when you are driving in more extreme off-road situations. This system produced max dyno gains of 4 hp and 5 lb-ft at the rear wheels. All of the necessary hardware is included, and factory-mounting locations are used for an easy installation. Backed by Flowmaster's Lifetime Limited Warranty.


FlowFX Series performance muffler offers an aggressive sound level and increased performance

409 stainless steel construction delivers extra durability and improved long-term corrosion resistance

Max dyno gains of 4 hp and 5 lb-ft at the rear wheels

3.00-inch 16-gauge mandrel bent stainless steel tubing helps maintain maximum exhaust flow for better power

Includes all necessary hardware for an at home installation

Dump style exit allows for better ground clearance when in extreme off-road conditions

Uses factory hanger locations for easy installation

Lifetime Limited Warranty