Sale

Exhaust Exhaust Pipes, Systems and Components

Flowmaster

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

$461.95 $415.95 Save $46.00

SKU: F00L 717972

In Stock
In Stock
Ships by Aug 5
Free Shipping over $100
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

Part #: 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 performance409 stainless steel construction delivers extra durability and improved long-term corrosion resistanceMax dyno gains of 4 hp and 5 lb-ft at the rear wheels3.00-inch 16-gauge mandrel bent stainless steel tubing helps maintain maximum exhaust flow for better powerIncludes all necessary hardware for an at home installationDump style exit allows for better ground clearance when in extreme off-road conditionsUses factory hanger locations for easy installationLifetime Limited Warranty

Features:

  • FlowFX Series performance muffler offers an aggressive to moderate sound level and increased performance
  • Offers a Deep Powerful Sound 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
  • Max dyno gains of 4 hp and 5 lb-ft at the rear wheels
  • Includes All Necessary Hardware For An At Home Installation
  • 3.00-inch 16-gauge mandrel bent stainless steel tubing helps maintain maximum exhaust flow for better power
  • Dump Style Exit Allows For Better Ground Clearance When In Extreme Off-Road Conditions
  • Includes all necessary hardware for an at home installation
  • Uses Factory Hanger Locations For Easy Installation
  • Dump style exit allows for better ground clearance when in extreme off-road conditions
  • Lifetime Limited Warranty
  • Uses factory hanger locations for easy installation
  • Lifetime Limited Warranty

FlowFX Extreme Cat-Back Exhaust System | 3 in. Tubing | Single Dump Style Exit | 409 Stainless Steel | Incl. Installation Hardware

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

MIA's Description

The Flowmaster FlowFX Extreme Exhaust System is designed to enhance performance and exhaust tone. It features corrosion-resistant 409S stainless steel construction for durability, large-diameter, mandrel-bent tubing, and a high-flow FlowFX muffler for increased efficiency and a moderate-aggressive tone. It has a turn-down style exit for enhanced clearance and offers simple installation using factory hangers, with most applications requiring no cutting, drilling, or modifications. It is made in the USA and backed by a limited lifetime warranty.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandFlowmaster
Part NumberF00L 717972

Videos

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy