Grail exhaust system suitable for Toyota GR Supra MK5 3.0l (A90) – valve system

description

The GRAIL valve-controlled exhaust system, designed for the Toyota GR Supra MK5 3.0l (A90), combines a sporty sound with full road legality. Thanks to ECE type approval, the system is registration-free within the EU and ready to drive immediately. Handcrafted in Germany from L304 stainless steel.

The GR Supra's B58 inline-six engine delivers enormous sound potential straight from the factory – the GRAIL valve-controlled exhaust system brings out this character to its fullest. Sporty, distinctive, and perfectly tuned to the premium aspirations of the Supra MK5.

Loud but Legal: The GRAIL exhaust system utilizes the factory-installed valve control of the GR Supra and behaves exactly as Toyota intended. At higher engine speeds and under load, the valves open fully – then the system delivers the full GRAIL sound. Because the valves are controlled exclusively via the factory system, the system complies with all ECE regulations and is fully street legal.

FLOW DOWN® is an official GRAIL partner in the Ruhr area and specializes in the professional installation of exhaust systems. Installation is carried out directly at our facility in Essen – cleanly, precisely, and including a functional test of the valve control.

Highlights

• Specifically designed for Toyota GR Supra MK5 3.0l (B58 engine)
• ECE type approval – registration-free within the EU
• Flap control via standard Toyota control unit
• L304 stainless steel, handcrafted in Germany
• FLOW DOWN® is an official GRAIL partner in the Ruhr area

Material

L304 stainless steel, handcrafted in Germany. Mufflers specially developed in the GRAIL sound lab for the GR Supra's B58 engine ensure maximum sound when the valves are open and maximum damping when they are closed – the distinctive GRAIL delta between loud and quiet.

Available variants

• Tailpipes 115 mm – brushed stainless steel
• Tailpipes 115 mm – Black

Please select your desired tailpipe variant in the configurator.

use

The valve-controlled exhaust system replaces the entire exhaust system downstream of the pre-muffler. The valves are controlled exclusively via the factory Toyota valve control system – i.e., via the original Sport mode of your GR Supra. No additional remote control or extra wiring harness is required.

Professional installation by FLOW DOWN® in Essen is recommended. As an official GRAIL partner, we know the systems in detail and ensure clean installation, correct connection to the damper control, and functional testing.

GRAIL order with installation at FLOW DOWN®

Since GRAIL systems have a longer delivery time due to production requirements, we offer a fair down payment model for orders including installation:

• Upon placing the order, you pay 50% of the investment.
• We will pay GRAIL in advance on your behalf and order the system.
• You pay the remaining amount after the system arrives at our workshop.
• Then schedule an appointment for the installation.

Important: The deposit option is only available for orders including installation and only works via prepayment/bank transfer. PayPal or other payment methods are not accepted.

Swiss suitability assessment

For customers in Switzerland: Upon request, you can receive a Swiss conformity certificate for the GRAIL exhaust system for an additional fee. If you are interested, simply contact our support team – we will clarify the details with you directly.

Suitable vehicles

• Toyota GR Supra MK5 3.0l (A90) – ab Bj. 2019
• Toyota GR Supra MK5 3.0l Facelift (A90) – ab Bj. 2023

Note: The 2.0L version of the GR Supra has a different engine (B48) and therefore a different exhaust system connection. Please contact support for this version.

scope of delivery

• 1x GRAIL exhaust system with valves, suitable for Toyota GR Supra MK5 3.0l (A90)
• Tailpipes 115 mm (stainless steel or black, depending on the selected variant)
• mounting material
• ECE type approval (paper)

Information on admission

The GRAIL exhaust system has ECE type approval and is registration-free for EU vehicles. For imported vehicles with a different operating permit, please check before purchase whether registration in the vehicle documents is required. The included ECE type approval certificate should be carried in the vehicle.

All brands, model names and manufacturers mentioned in this shop such as AUDI, BMW, Hyundai, Kia, Toyota, VW, Tesla are used solely to describe the compatibility of our products . They have no connection with the respective brand owners and, unless expressly stated, they are not original parts from these manufacturers.

FLOW DOWN® is an independent supplier of tuning and accessories. The use of the brand names mentioned is for guidance only and does not constitute a collaboration, licensing or approval by the respective rights holders . All trademark and name rights are held by their respective owners.