BMW F91/F92/F93 M8 Stainless Steel Valved Catback Exhaust

BMW F91/F92/F93 M8 Stainless Steel Valved Catback Exhaust

Transform the sound and performance of your BMW M8 with this Stainless Steel Valved Catback Exhaust System — engineered to deliver an aggressive exhaust note, improved exhaust flow, and the versatility of switchable exhaust valves for both everyday driving and spirited performance.

Designed specifically for the F91, F92 and F93 M8 equipped with the 4.4L twin-turbocharged S63 V8, this premium valved exhaust system replaces the restrictive factory rear section with a high-flow mandrel-bent stainless steel design. The valve system allows you to move between a refined, comfortable exhaust tone and a deep, aggressive motorsport-inspired soundtrack at the press of a button.

Manufactured from premium T304 stainless steel with precision TIG welding throughout, this exhaust system offers exceptional durability, corrosion resistance, and long-term reliability. Whether paired with the factory downpipes or upgraded high-flow or catless downpipes, it delivers improved throttle response, enhanced turbo acoustics, and a significantly more engaging driving experience.

Finished with quad carbon fibre tips and supplied with the wireless remote that controls the valves.

Key Features

Independent Varex Valve System

Rather than reusing the restricted factory valves, this system operates its own dedicated valve assembly with complete travel in both directions. Sealed when closed for a quieter OEM+ driving experience, and fully unobstructed when open for a fully aggressive exhaust tone.

Premium T304 Stainless Steel Construction

Manufactured from high-quality T304 stainless steel for exceptional durability, corrosion resistance, and heat tolerance.

Increased Exhaust Flow

Mandrel-bent tubing reduces exhaust restriction for improved engine breathing and performance.

Precision TIG Welded

Engineered for maximum strength and long-term reliability under demanding driving conditions.

Remote Controlled Operation

Valve operation is handled entirely by the supplied remote. The system does not connect to the factory valve motors.

Direct Bolt-On Fitment

Built to the correct specification for your body style using factory mounting locations for straightforward installation.

Performance Benefits

• Improved exhaust flow
• Sharper throttle response
• Enhanced turbo spool acoustics
• Reduced exhaust backpressure
• Aggressive performance exhaust note
• Switchable quiet and loud driving modes
• Excellent supporting modification for tuned vehicles

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

Sound Characteristics

Valves Closed

• Refined and comfortable cruising sound
• Minimal cabin drone
• Ideal for everyday driving and long-distance trips

Valves Open

• Deep and aggressive V8 tone
• Increased exhaust volume
• Enhanced turbo spool and overrun acoustics
• Sportier cold starts
• More engaging driving experience throughout the rev range

Vehicle Fitment

BMW F91 M8 / M8 Competition Convertible (2019–2024)

BMW F92 M8 / M8 Competition Coupe (2019–2024)

BMW F93 M8 / M8 Competition Gran Coupe (2019–2024)

4.4L Twin-Turbocharged S63 V8

Which Body Style Do I Have?

The Coupe, Convertible and Gran Coupe are different lengths, so each takes its own exhaust — select your body style and we will supply the matching system.

F92 Coupe — two doors, fixed roof.
F91 Convertible — two doors, folding soft top.
F93 Gran Coupe — four doors.

Which OPF Option Do I Need?

European-delivered cars are fitted with a particulate filter (OPF/GPF) in the exhaust. Australian and North American cars are not. The two specifications use different exhaust hardware, so choosing correctly ensures a precise, bolt-on fit.

NON OPF - AU/US SPEC — for vehicles delivered new in Australia, New Zealand, the United States or Canada.

OPF EQUIPPED - EU SPEC — for vehicles delivered new in the European Union or the United Kingdom.

UNSURE - CONTACT US — select this and our team will confirm the correct specification against your VIN before dispatch.

Please Note

Professional installation is strongly recommended.

Exhaust sound may vary depending on whether the factory downpipes or aftermarket catted or catless downpipes are installed.

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.