GRAIL Valved Exhaust System | ECE | suitable for BMW X3 M40i B58 G01 (model year 2018-2024) | 08/2021–10/2024 (265 kW), 4-outlet Stainless Steel, with installation

GRAIL Valved Exhaust System
suitable for BMW X3 M40i B58 G01 (Bj. 2018-2024) – 08/2021–10/2024 (265 kW), 4-outlet Stainless Steel, with Montage

suitable for BMW X3 M40i B58 G01 (2018-2024) The GRAIL valve exhaust system for the BMW X3 M40i B58 (G01) is engineered specifically around the B58 engine's character – delivering 260–265 kW / 354–360 PS with a sound profile that matches its performance potential. Active GRAIL valve control lets you switch between a composed everyday note and a full, open exhaust character at the push of a button, while ECE type approval ensures the system is road legal without re-registration across all participating ECE countries. Built from L304 stainless steel throughout, the system is available with 4-outlet tips in polished stainless steel or black. Order now at the pre-order price – valid only until the first official sound file is released. Delivery from October 2026.

Highlights

• B58-Tuned Sound Profile: The exhaust note is developed specifically for the B58 inline-six – full, linear, and free of artificial resonance at any load point.
• Active GRAIL Valve Control: Electronically adjustable valve system switches between a refined daily driving mode and an open, sport-oriented exhaust character – on demand.
• Quad-Tip Rear Design: The 4-outlet tip configuration transforms the rear fascia of the G01, giving the X3 M40i a visual presence that matches its performance output.
• Driving Emotion on Every Road: Whether cruising or pushing the B58 to its limits, the GRAIL system responds with a sound that amplifies the driving experience without compromising daily comfort.
• ECE Type Approval: Registration-free* in all participating ECE countries.
• German Engineering: Developed by German engineers for maximum quality.
• L304 Stainless Steel Construction: 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.

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.