BMW F92 M8 Catless Downpipe

BMW F92 M8 Catless Downpipe

Unlock the full performance potential of your BMW F92 M8 with these Catless Downpipes — engineered to maximise exhaust flow, improve turbocharger efficiency, and unleash the true character of the S63 twin-turbo V8.

Designed specifically for the 4.4T S63 engine, these downpipes replace the restrictive factory catalytic converters, significantly reducing exhaust backpressure and allowing both turbochargers to spool faster and operate more efficiently. The result is sharper throttle response, increased power potential, and a noticeably more aggressive exhaust note.

Manufactured from mandrel-bent stainless steel with precision TIG welding throughout, they are built to withstand extreme exhaust temperatures while maintaining OEM-style fitment. Braided flex sections absorb engine movement and factory sensor bungs are retained.

Whether paired with the factory exhaust or a complete aftermarket setup, a catless downpipe is one of the most effective performance upgrades available for the S63 platform.

Key Features

High-Flow Catless Design

Removes the restrictive factory catalytic converters for maximum exhaust flow and performance potential.

Premium Stainless Steel Construction

Corrosion-resistant stainless steel delivers exceptional durability and heat resistance under sustained load.

Improved Turbo Efficiency

Reduced backpressure allows both turbochargers to spool faster and operate more efficiently.

Braided Flex Sections

Absorb engine movement and thermal expansion, protecting the joints and the factory manifold.

Retained Sensor Bungs

Factory oxygen sensor positions are retained so the original sensors transfer directly across.

Direct Bolt-On Fitment

Designed for the S63 platform using factory mounting locations, supplied as a matched left and right pair.

Performance Benefits (When Tuned)

• Increased horsepower and torque potential
• Faster turbo spool and improved throttle response
• Reduced exhaust backpressure
• Enhanced turbocharger efficiency
• More aggressive exhaust note
• Ideal foundation for Stage 2 and higher-performance builds

Performance gains may vary depending on ECU calibration, fuel quality, and supporting modifications.

Sound Characteristics

Compared to the factory downpipes, a catless setup typically delivers:

• Deeper and more aggressive V8 tone
• Increased turbo spool acoustics
• Louder cold starts
• Enhanced pops and burbles (when tuned)
• Greater overall exhaust volume

Vehicle Fitment

BMW F92 M8 / M8 Competition (2019+)

4.4L Twin-Turbocharged S63 Engine

Please Note

This is a catless motorsport product intended for off-road and motorsport use only.

Professional installation is strongly recommended.

ECU tuning may be required to fully utilise the performance benefits and prevent check engine lights associated with catalyst removal.

Supplied without heat shielding. A heat-shielded version is available separately.

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.