GRAIL Valved Exhaust System | ECE | suitable for Kia Stinger 3.3 T-GDi (model year 2017-2023) | 09/2018–10/2020 (OPF), with installation

GRAIL Valve Exhaust System
suitable for Kia Stinger 3.3 T-GDi (2017-2023) – 09/2018–10/2020 (OPF), with Montage

The Kia Stinger 3.3 T-GDi houses a twin-turbo V6 with 3342 cc displacing up to 272 kW — an engine architecture that deserves a voice to match. The GRAIL valve exhaust system unlocks that voice with precision: fully variable, driver-controlled sound management that shifts the acoustic character of the Stinger from composed to commanding. Built from L304 stainless steel and engineered to retain the OEM tips, the system integrates without altering the car's exterior silhouette. Compatible with all model years from 10/2017 to 05/2023, covering both the non-OPF variant (272 kW / 370 PS) and the OPF variants (269 kW / 366 PS) introduced from 09/2018 onward.

Highlights

• Twin-Turbo V6 Sound: The 3342 cc twin-turbo six-cylinder gains a fully variable acoustic range — from a restrained, deep idle note to an open, layered exhaust voice under load.
• Valve Control: Integrated exhaust valves allow the driver to switch between a subdued and an unrestricted sound profile, adapting the Stinger's character to any situation or environment.
• OEM Tip Retention: The system is designed to carry over the factory tips, preserving the Stinger's rear aesthetic exactly as intended — no visual modifications, no aftermarket tips required.
• Full Model Year Coverage: A single system design covers all Stinger 3.3 T-GDi variants built between 10/2017 and 05/2023, including both non-OPF and OPF configurations across all output levels.
• ECE Type Approval: Registration-free* in all participating ECE countries.
• German Engineering: Developed by German engineers for maximum quality.
• L304 Stainless Steel: Corrosion-resistant, dimensionally stable, with a flawless surface finish.
• Flow Optimized: Efficient exhaust gas routing and heat dissipation.
• Drone-Free Sound Comfort: Absorption technology eliminates interference frequencies in the interior.
• OEM-Style Fitment: Designed for mounting on the original suspension points.

This exhaust system has ECE type approval and is therefore registration-free* road legal.

*Valid for vehicles with EU registration in stock condition. For import vehicles or combinations with other modifications (e.g. power upgrades, intake), a separate inspection may be required. Please consult our support: [email protected]

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.