GRAIL Valved Exhaust System | ECE | suitable for Mercedes-AMG G63 W463A

GRAIL Valve Exhaust System
suitable for Mercedes-AMG G 63 (W463A)

If you drive the G 63, you already know its distinctive V8 sound – but many drivers want more depth, more presence, and noticeably more goosebumps, without compromising on everyday usability or registration. That’s exactly where the GRAIL Valve Exhaust System comes in. It takes advantage of the factory sidepipe architecture and replaces key components with flow-optimized parts made from 304L stainless steel, featuring precisely tuned valve integration. The result: an audibly more powerful, sportier V8 sound – fully ECE-compliant and seamlessly connected to the AMG control system.

If you drive the G 63, you already know its distinctive V8 sound – but many drivers want more depth, more presence, and noticeably more goosebumps, without compromising on everyday usability or registration. That’s exactly where the GRAIL Valve Exhaust System comes in. It takes advantage of the factory sidepipe architecture and replaces key components with flow-optimized parts made from 304L stainless steel, featuring precisely tuned valve integration. The result: an audibly more powerful, sportier V8 sound – fully ECE-compliant and seamlessly connected to the AMG control system.

Highlights

• ? Significantly more intense V8 sound – present in every driving situation, without being intrusive
• ? Side Tips in the original sidepipe layout – precisely fitted and perfectly integrated
• ? ECE type-approved* – no registration required in all participating ECE countries
• ? Developed by German engineers – for the highest precision and quality
• ? Premium 304L stainless steel
• ? CNC-machined components – maximum durability and performance
• ? Vehicle-specific fitment – a precise and thoughtfully engineered installation
• ? Model-dependent valve integration: OEM Valve solution utilised, always optimally tuned and legally compliant

TÜV / ABE available upon request

We currently ship within Europe only.

If a part is not available, we will contact you with an estimated wait time.

If you wish to return a product after receiving it, we offer a 14-day returns policy. Custom-made products are not eligible for return, and return shipping is at the customer's expense. Full delivery and returns terms are on the “Delivery Information” page — the link is at the bottom of the page.

Products come with a warranty, detailed in a certificate included in the box.

To make a valid claim, you must prove the damage was not caused by you and that the warranty certificate is valid.

Full terms are on the “Terms & Conditions” page — the link is at the bottom of the page.