Scorpion BMW G90 & G99 M5 GPF Back Exhaust System

Transform your BMW G90 or G99 M5 with the Scorpion GPF Back Exhaust System — a premium, UK-engineered performance upgrade designed to unlock the full potential of the S68 twin-turbo V8 engine. Precision-built from T304 motorsport-grade stainless steel, this system delivers exceptional sound, performance, and quality while retaining full compatibility with the car’s factory driving modes and electronic valve control.

The twin 80mm equal-length design optimises exhaust flow and balances pressure between the left and right banks for improved performance and a distinctive, deep exhaust tone. Integrated electronic exhaust valves and actuators ensure seamless operation with all OEM settings, allowing you to switch effortlessly between refined cruising and a more aggressive, resonant sound at the touch of a button.

Whether you prefer a stealthy finish or a motorsport-inspired aesthetic, the system is available with a choice of four 100mm Daytona or Ascari tailpipes, each designed to complement the M5’s bold design.

Handcrafted in the UK and dyno-tested for precision, Scorpion’s GPF Back Exhaust combines intelligent engineering with stunning craftsmanship, ensuring reliability, durability, and a noticeable improvement in both tone and throttle response.

R44 Performance collaborated with Scorpion for the development of this GPF-back exhaust system to ensure it provides the perfect combination os sound, performance, quality, durability & value for BMW G9X M5 owners.

Key Features

• Twin 80mm equal-length GPF back design – enhances flow, tone, and performance

• Constructed from T304 motorsport-grade stainless steel

• Fully compatible with OEM electronic valve control and driving modes

• Includes 2x electronic exhaust valves and actuators

• Improves throttle response and sound clarity

• Choice of 4 x 100mm tailpipe finishes:

  • Polished Daytona

  • Black Ceramic Daytona

  • Carbon Fibre Ascari

• Direct bolt-on fitment – no modifications required

• Designed, developed, and handmade in the UK

• Precision TIG-welded for strength and reliability

Compatibility

• BMW G90 M5 Sedan

• BMW G99 M5 Touring

Perfect for both daily driving and performance applications, this Scorpion GPF Back System offers the ideal balance between power, refinement, and premium build quality.

Technical Specification

• Pipe Diameter: 80mm (twin)

• Configuration: Equal-length GPF back exhaust

• Material: T304 stainless steel

• Valve Control: Compatible with OEM electronic actuators

• Tailpipe Options: Polished Daytona / Black Ceramic Daytona / Carbon Fibre Ascari

Why Choose Scorpion?

Handcrafted in the UK using decades of motorsport expertise, Scorpion Exhausts are engineered for precision, performance, and endurance. Every system undergoes rigorous R&D and dyno testing to ensure class-leading results — offering enthusiasts an unparalleled driving and acoustic experience.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.