Valvetronic Designs - Mercedes Benz G-Wagon 463A / 464 Valved Sport Exhaust System
- Description
- Fitment
- Refund Policy
Mercedes G63 AMG (W463A) – Valved Exhaust System
T304 Stainless Steel • Full Valve Control
Overview
The modern G-Wagon is a symbol of power, presence, and luxury—but its factory exhaust leaves much of the AMG character muted. The Valvetronic Designs Valved Exhaust System transforms the G63 into a snarling beast while retaining the refined manners you need for long drives. Inspired by the AMG GT-R’s visceral tone, this system was developed from the ground up to deliver an uncompromising blend of aggression, refinement, and daily usability.
With full valve control, you dictate the soundtrack of your G63—whether it’s a subdued purr for comfort or a raw, race-inspired roar that commands attention.
Sound & Control
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Valves Open: Unleashes a deep, aggressive tone reminiscent of AMG’s GT-R, filling the cabin with character while remaining drone-free.
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Valves Closed: Civilized and refined—perfect for commutes, road trips, or low-profile situations.
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Balanced Tuning: Developed for maximum excitement with zero compromise to comfort or usability.
Performance Engineering
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Optimized Flow: Fully mandrel-bent piping ensures smooth, unrestricted airflow for sharper throttle response.
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Acoustic Design: Tuned for a naturally aspirated-style character while maintaining the muscular presence of the 4.0L bi-turbo V8.
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Strength & Durability: Precision TIG-welded for long-term reliability under high-performance use.
Construction & Craftsmanship
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Material: T304 stainless steel throughout.
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Finish: Includes both anodized gold T304 and black T304 slash-cut tips for a fully customizable aesthetic.
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Valve Integration: Uses OEM-style electronic valves for seamless operation.
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Reversible: 100% bolt-on design, easily returned to stock at any time.
Fitment
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2019+ Mercedes G63 (W463A)
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2022-2025 Mercedes G63 Squared (W463A)
Will not fit G65 models. - *Does not fit 2026 models*
Features
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T304 stainless steel construction
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Dual tip finish included: Anodized Gold T304 slash-cut tips
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Electronic exhaust valves with OEM integration
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Precision TIG welds for strength and durability
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Fully mandrel-bent piping for optimal flow
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100% reversible—return to stock anytime
Returns
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. All items are subject to 15% restocking fee from the manufacturer.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Additional non-returnable items:
Gift cards
Downloadable software products
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.
There are certain situations where only partial refunds are granted (if applicable)
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
If you would like to start a return please click here
Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at info@amtuning.ca.
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Labor Fees (if applicable)
AM Tuning Canada is not responsible for, and shall not be liable for, any labor fees, installation charges, removal charges, diagnostic fees, or other service-related costs incurred by the customer or any third party in connection with the installation, removal, modification, servicing, or use of any products purchased from AM Tuning Canada. Unless expressly agreed to in writing by AM Tuning Canada, all such labor and service costs are the sole responsibility of the customer.
Exchanges (if applicable)
To start an exchange, click here
Non-refundable items
The following items are non-refundable and non-returnable once purchased: oils, fuel or oil additives, filters, tuning cables, OBDeleven products, Braum seats, spark plugs, coil packs, and similar consumable, wheel spacers, wheels bolts, license plate brackets, electronic tuning components and any other product subject to discretion of AM Tuning Canada.
Other products from brands such as MHD, Bootmod3, Ecutek, Braum racing, Novitec are also non-refundable and non-returnable.
All sales of these items are final and are subject to the policies and discretion of AM Tuning. By completing a purchase, the customer acknowledges and agrees to these terms.
