Toyota A90 MK5 Supra Catless/Catted Downpipe With Heat Shield

Toyota A90/A91 MK5 GR Supra Catless/Catted Downpipe with Heat Shield

Unlock the full performance potential of your Toyota GR Supra with this High-Performance Catless/Catted Downpipe with Heat Shield, engineered to maximise exhaust flow, reduce turbocharger back pressure, and deliver significant improvements in horsepower, torque, throttle response, and exhaust sound.

Designed specifically for the Toyota A90/A91 MK5 GR Supra equipped with the BMW B58 turbocharged engine, this direct bolt-on downpipe replaces the restrictive factory catalytic converter with a high-flow catless or performance catted alternative. By reducing exhaust restriction, the turbocharger is able to spool faster and operate more efficiently, resulting in stronger acceleration, increased power, and a noticeably more aggressive exhaust note.

Manufactured from premium T304 stainless steel with precision TIG welding, CNC-machined flanges, and an integrated heat shield, this downpipe is built to withstand extreme exhaust temperatures while providing exceptional durability, corrosion resistance, and OEM-quality fitment. The integrated heat shield helps reduce radiant heat within the engine bay, protecting surrounding components and improving overall thermal management.

Whether your Supra is completely stock or running a Stage 2 ECU tune, this is one of the most effective bolt-on performance upgrades available for the B58 platform.

Key Features

Available in Catless or High-Flow Catted Configurations

Choose between a completely unrestricted catless version for maximum performance or a high-flow catted version for improved emissions control while maintaining excellent exhaust flow.

Integrated Heat Shield

Features a built-in stainless steel heat shield designed to reduce engine bay temperatures and protect surrounding components from excessive radiant heat.

Increased Exhaust Flow

Significantly reduces exhaust back pressure, allowing the turbocharger to spool faster and operate more efficiently.

Premium T304 Stainless Steel Construction

Manufactured from high-quality T304 stainless steel for exceptional durability, corrosion resistance, and long service life.

Precision TIG Welded

Professionally TIG welded to ensure maximum strength and reliability under high-temperature, high-performance conditions.

CNC Machined Flanges

Precision CNC-machined flanges provide a perfect seal and OEM-quality fitment.

Direct Bolt-On Installation

Designed as a direct replacement for the factory downpipe using the original mounting points and factory oxygen sensor locations.

Performance Benefits

Increased Horsepower & Torque

Improved exhaust flow allows the turbocharger to operate more efficiently, providing noticeable gains in horsepower and torque, particularly when paired with ECU tuning.

Faster Turbo Spool

Reduced back pressure enables quicker turbocharger response for improved acceleration and throttle response.

Lower Exhaust Back Pressure

Allows exhaust gases to exit more efficiently, reducing restriction throughout the exhaust system.

Supports Stage 2 Performance

One of the primary supporting modifications for Stage 2 ECU calibrations and higher-performance B58 builds.

Sound Characteristics

Compared to the factory downpipe, this system delivers:

• Noticeably louder exhaust volume

• Deeper and more aggressive exhaust tone

• Enhanced turbo spool and induction noise

• Sharper pops and crackles (vehicle tune dependent)

• Increased exhaust presence throughout the entire RPM range

The catless version provides the loudest and most aggressive sound, while the high-flow catted version offers a refined tone with slightly reduced volume.

Vehicle Fitment

Toyota GR Supra A90 (2020–2022)
Toyota GR Supra A91 (2021+)

Engine: BMW B58 3.0L Turbocharged Inline-6

Please Note

Professional installation is strongly recommended.

An ECU tune is highly recommended to maximise performance and drivability.

The catless version may trigger a Check Engine Light (CEL) depending on the vehicle's ECU calibration. The high-flow catted version may also trigger a CEL on some vehicles.

This product is intended for off-road, racing, or motorsport use where permitted by local regulations.

Why Choose Proven Performance Parts

We specialise in high-performance parts for European vehicles — including Volkswagen GTI & R models, Audi S/RS platforms, and BMW M vehicles. Every product we offer is carefully selected for its quality, fitment, and real-world performance — tested by enthusiasts, for enthusiasts.