Armytrix Mercedes-AMG W463A G63 (2018-Present) valvetronic exhaust system
Redefine your G-Wagon’s sound with the ARMYTRIX Valvetronic Exhaust System, precision-built for the Mercedes-AMG G63 W463A (2018–Present) with OPF. Unleash the full potential of your 4.0L twin-turbo V8 (M177 DE 40 AL) while maintaining factory-level integration. Designed to work with your OEM valvetronic system, this cat-back exhaust transforms your G63 from ultra-luxurious to aggressively dominant—with a sound profile as bold as its stance.
Whether you’re conquering city streets or remote trails, this system delivers signature AMG tone with deeper growls, sharper throttle response, and full valve control—all with direct plug-and-play compatibility.
Fitment:
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Vehicle: Mercedes-AMG G63 (W463A)
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Years: 2018–Present
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Engine: 4.0L Twin-Turbo V8 (M177 DE 40 AL)
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Emissions System: OPF-equipped
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Drive Orientation: Left-Hand Drive & Right-Hand Drive Compatible
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Control System: Uses OEM Valvetronic System
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Verification: VIN Required for accurate model confirmation
Key Features:
OEM Valve Integration – No Extra Switches Required
The ARMYTRIX valvetronic cat-back system uses your G63’s factory exhaust valve system, ensuring seamless control via Dynamic Select driving modes—no remotes, no wires, no extra modules.
Full System Recommended – With 200-Cell Sport Cat Downpipes
Unlock the deepest and most aggressive V8 soundtrack with the complete system: cat-back + 200-cell downpipes. This combination maximizes flow, eliminates restriction, and minimizes the chance of CEL triggers.
Advanced OPF CEL Suppression (Full System Only)
The full system includes an exclusive OPF and catalytic converter fault-code suppression mechanism, reducing the likelihood of Check Engine Lights (CEL) when modifying emissions-related components.
Armynator Module Included (With Full System)
Purchasing the full system includes the ARMYNATOR—a dedicated valve control module that ensures perfect communication between the aftermarket exhaust and your factory electronics, maintaining full functionality and safety.
Direct Bolt-On Installation – Zero Cutting or Welding
Engineered for perfect fitment, this system offers bolt-on compatibility with OEM hangers and routing. Install is simplified with plug-and-play design—especially with the factory valve system already in use.
Valvetronic Sound Modes (Controlled via OEM Drive Select):
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Comfort Mode: Valves closed – low-profile sound ideal for everyday use
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Sport/Sport+: Valves open automatically – aggressive, deep AMG tone
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Race Mode (if equipped): Full open – maximum volume, pops, and crackles
What’s Included (Full System):
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ARMYTRIX Valvetronic Cat-Back Exhaust System
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200-Cell Sport Catalytic Downpipes (optional, highly recommended)
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Quad Signature Exhaust Tips (finish options available)
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ARMYNATOR Control Module (included with full system)
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Mounting Hardware & Digital Installation Guide
System Compatibility & Notes:
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Designed for OPF-equipped Mercedes-AMG W463A G63 models
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OEM exhaust valve integration for factory-style functionality
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Works on both LHD and RHD vehicles
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VIN verification required before ordering
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Check Engine Light suppression is only available with full system (cat-back + downpipes)
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Professional installation is strongly recommended
Luxury Meets Muscle – Let the G63 Roar.
The ARMYTRIX Valvetronic Exhaust System gives your W463A G63 the voice it deserves—fully controlled, deeply resonant, and unmistakably AMG. Elevate your presence with sound that commands attention wherever the road takes you.
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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
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Same-Day Shipping
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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
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International Shipping
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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.
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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."
