GRAIL Replacement Pipe | no road approval | 3" | OPF-back | suitable for BMW M3/M4 G8x

GRAIL Replacement Pipe
suitable for BMW M3/M4 G8x

The GRAIL OPF/cat replacement pipe replaces the factory petrol particulate filters and secondary catalyst of the G8x M models with a fully twin-flow 3-inch pipe routing. The system is designed for use away from public roads and is not permitted under the German StVZO.

Highlights

• 2x 3-inch pipe routing – flow-optimised throughout
• OPF and pre-silencer replacement in a single component
• Clearly altered sound character – harder-edged, more immediate, more forceful
• Suitable for stock and GRAIL rear mufflers
• Ready to fit, with bracket mounts and lambda sensor bosses
• Made from high-grade 304L stainless steel
• Welded, deburred and prepared ready for installation
• Developed in Germany

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.