Description
Overview
The Flowmaster American Thunder Cat-back Exhaust System is a race-inspired, cat-back setup engineered for enthusiasts who want the most aggressive sound and performance they can buy. Designed to mount behind the factory catalytic converters — or most original-style aftermarket H-pipes — this American Thunder Extreme system replaces your restrictive stock exhaust with mandrel-bent tubing built for maximum flow, throttle response, and power.
At the heart of the system are Flowmaster’s legendary Super 44 Series mufflers, delivering a super aggressive interior and exterior tone. The turn-down tailpipes drop at the rear of the transmission and eliminate full-length tailpipes, which maximizes the sound level while opening up extra clearance for wide tires and modified suspensions. If you want your vehicle to announce itself, this is the setup built to do exactly that.
Key Benefits
Every Flowmaster system is engineered to improve throttle response and power over the restrictive factory exhaust. The mandrel-bent construction preserves pipe diameter through every bend for smooth, uninterrupted flow, while the dual tailpipe configuration and Super 44 mufflers give you that unmistakable, deep, aggressive Flowmaster tone. This is a complete kit that includes all necessary parts and hardware for a straightforward, easy installation.
- Race-inspired American Thunder Extreme cat-back design that mounts behind factory catalytic converters or most original-style aftermarket H-pipes
- Super 44 Series mufflers (black) for a super aggressive interior and exterior tone
- Mandrel-bent 2.50″ inlet piping (silver) for maximum flow and performance
- Turn-down dual tailpipes that drop at the rear of the transmission for added clearance around wide tires and modified suspensions
- Improved throttle response and power versus the restrictive stock system
- CARB (California) compliant — Emission Code 5
- Complete kit with all necessary parts and hardware included for easy installation
Configuration & Components
This American Thunder system ships as a complete cat-back kit with dual tail pipes and the Super 44 mufflers included. Exhaust tips are sold separately, so you can finish the look exactly the way you want, and no heat shield is included with this system. The 2.50″ inlet diameter and silver pipe finish paired with black mufflers deliver both the performance and the purposeful appearance serious enthusiasts expect.
Fitment
This system is configured for 2WD applications and fits coupes and convertibles. It is designed for an easy, bolt-on fit, mounting behind the factory catalytic converters or most original-style aftermarket H-pipes. Please note this product carries a California Proposition 65 warning. Confirm your exact application before ordering to ensure the correct fit for your vehicle.
