Armytrix Mercedes-AMG GT/GT S(2015–Present) valvetronic exhaust system
Unleash the full fury of the 4.0L V8 Biturbo with the ARMYTRIX Valvetronic Exhaust System for the Mercedes-AMG GT and GT S. Designed for the discerning enthusiast, this precision-crafted system transforms your AMG from a refined grand tourer into a track-capable machine—with a sound that speaks as loudly as its performance.
From elegant coupé to brutal supercar at the push of a button.
Vehicle Fitment:
Model: Mercedes-AMG GT / GT S
Chassis Code: C190
Years: 2015 – Present
Engine: 4.0L V8 Biturbo (M178)
Body Style: Coupé
Drive Orientation: Compatible with both Left-Hand Drive and Right-Hand Drive models
VIN Verification Required for accurate fitment
EV motor bypass (EVP3) may be required depending on model
OBDII Plug-and-Play Valve Control Module Required
Performance Features:
Dual 2.75” Mandrel-Bent Main Pipes
Engineered for superior flow and maximum power gains, the dual 2.75-inch design enhances exhaust velocity and sharpens throttle response across the rev range.
Valvetronic Sound Control via OBDII
Precision-engineered valve system gives you complete control over your AMG’s exhaust personality:
Quiet Mode: Valves closed – maintain refinement and comfort during city driving
Race Mode: Valves open – unleash a raw, race-bred exhaust note
Auto Mode: Dynamic valve adjustment based on RPM and throttle input
Catalytic Converter & OPF Fault Code Clearing Mechanism
Integrated CEL suppression helps minimize the chances of triggering check engine lights—ideal for performance-tuned or modified vehicles.
Multiple Control Options:
Wireless Remote Control – switch between modes instantly, wherever you are
ARMYTRIX Mobile App (iOS & Android) – manage valve settings, monitor system status, and more from your phone
Effortless Installation:
Plug-and-Play OBDII Valve Module
Quick, seamless integration with your vehicle’s electronics—cutting installation time by up to 30% compared to traditional cable-based systems
Direct Bolt-On Design
Uses factory mounting points for a hassle-free, non-invasive install—no welding, no cutting required
What’s Included:
ARMYTRIX Valvetronic Exhaust System
OBDII Plug-and-Play Valve Control Module
Wireless Remote Control
All Required Mounting Hardware
Digital Installation Guide
System Compatibility Notes:
Fits Mercedes-AMG GT / GT S Coupé (2015–Present)
For vehicles equipped with the M178 4.0L V8 Biturbo engine
Supports both LHD and RHD configurations
Different exhaust variants available – VIN and photos must be used to verify model compatibility
EVP3 bypass may be necessary depending on model year and configuration
Professional installation is recommended
Sound Like a Supercar. Drive Like a Legend.
The ARMYTRIX Valvetronic Exhaust System redefines the AMG GT driving experience—blending intelligent control with visceral sound and real-world performance gains. It’s not just an upgrade—it’s a transformation.
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T&C's
T&C's
All purchases on this website our subject to our Terms and Conditions. Please ensure you have read and understood these before making a purchase. If you have any questions, please feel free to contact us and we will endeavour to answer any questions you may have.
PLEASE BE AWARE: Sports cats can NOT legally be installed on a vehicle for use on a public road that was manufactured after 1st March 2001 unless type ECE 103R approved - this can be identified in either the product description and/or in the Technical Information section listed. If you have any doubt on this approval, please contact us immediately for confirmation. Fitting a De-Cat/Cat Bypass, DPF delete/bypass or GPF delete/bypass to a vehicle that is to be used on UK roads will cause the vehicle to fail the MOT emissions test, therefore rendering it unroadworthy and illegal to be used on the road. Therefore, any such products are strictly sold as off-road or motorsport use only and NOT for road use. The vehicle should be transported from place to place via a trailer, flatbed or other recovery means.
Stock Availability
Stock Availability
Due to the high volume of custom orders and special requests we receive daily, it’s not always possible to have every item readily available in our warehouse at all times. While we strive to maintain stock for popular products, some items may require additional processing time. If you need a product urgently, we highly recommend reaching out to our sales team here before placing your order to confirm availability and estimated delivery times.
Please Note:
- Orders with both in-stock and backorder or out-of-stock products will be dispatched once all products are available to ship together.
- Contact our sales team if you want your parts fitted to your vehicle at our Bristol Headquarters.
- Shipping estimates are based on courier delivery times and don't include time to despatch.
Delivery & Returns
Delivery & Returns
At AT Store, we understand the importance of timely delivery when it comes to your orders. Our goal is to have your products shipped on the same day we receive your order. We prioritise efficiency and strive to provide you with a seamless delivery experience.
Same-Day Shipping
We aim to dispatch your orders promptly to ensure minimal waiting time for our customers. Orders received before 15:00 (GMT) on business days will typically be processed and shipped on the same day. Orders received on weekends/holidays will be processed on the next business day.
Communication on Delays
While we make every effort to ship your orders promptly, there may be unforeseen circumstances or stock availability issues that could cause delays. In such cases, a dedicated member of our sales team will personally reach out to you to inform you of any delays and provide updates on the status of your order.
Akrapovic Products Lead Time
Please note that for Akrapovic products, there may be a lead time of up to 10 working days depending on current stock levels. Our team will inform you promptly if your order falls within this category and provide you with an estimated delivery date.
Tracking Information
Once your order has been dispatched, we will provide you with a tracking number via email. Additionally, the tracking number will be added to your order notes on our website. This allows you to easily track the progress of your delivery and stay informed about its whereabouts until it reaches your doorstep.
International Shipping
We now calculate international shipping costs separately to ensure the most accurate and competitive rates. If you’re placing an order from outside the UK, please contact us for a shipping quote before completing your purchase. Our team will provide you with the best available options tailored to your location.
We are committed to providing you with the best possible delivery service, ensuring that your orders reach you in a timely manner and in pristine condition. If you have any questions or concerns regarding our delivery process, please don't hesitate to contact us for assistance.
For information regarding Returns, please refer to our T&C's.
Email: Store@avontuning.co.uk
Phone: 01454 800 117
Online we currently accept payment from the methods listed above including a wide range of finance options.
Finance Options
In order to get the kit you want, when you need it, without ruining the family finances we offer a highly flexible range of finance options to help you get the best products on your vehicle now rather than at the end of the season when you've saved up the cash to make the purchase. There are even interest free options which effectively spread the cost without costing you any extra.
Avon Tuning Limited is an Introducer Appointed Representative of Social Money Limited t/a Payl8r who is authorised by the FCA under Ref. Number 675283. Credit is subject to creditworthiness and affordability assessments. Missed payments may affect your credit file, future borrowing and incur fees.
What Our Customers Are Saying
Mark W.
“Thanks to James and Marcus at Avon Tuning for arranging and fitting a Quicksilver exhaust to my new Defender V8. Everything went like clockwork and it sounds awesome”
Paris C.
"Would highly recommend Avon Tuning. They're extremely knowledgeable, outstanding customer service - we even had a lovely courtesy car for the few hours they had ours. You're in good hands with Avon Tuning!"
Richard N.
"I’d give 6 stars if they’d let me! Avon Tuning did the most fantastic job. I arranged everything with James at the beginning and he was so helpful, guiding me to the correct exhaust system (Miltek) and a Stage 1 Remap"
Peter B.
"Amazing service from James and the team at Avon Tuning.Fitted a new exhaust system on my Aston Martin Vantage, not only does it sound and look great but it puts smiles per miles for me."
