Upgrade Your BMW M3/M4 with Remus 081021 1401 Exhaust Tubes

by Dan May 6, 2026

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Upgrade Your BMW M3 or M4 with the Remus 081021 1401 Connection Tube Package with Valves

The BMW G80, G81, G82, and G83 models equipped with the S58 engine are among the most performance-focused vehicles on the road today. For enthusiasts looking to elevate both sound and driving dynamics, the Remus 081021 1401 BMW G80 G81 G82 Connection Tube Package with Valves offers a premium upgrade that enhances exhaust tone, improves flow, and integrates seamlessly with factory electronics. This high‑quality exhaust component is engineered specifically for the BMW M3 and M4 platforms, including Competition and xDrive variants.

What Is the Remus 081021 1401 Connection Tube Package?

The Remus 081021 1401 Connection Tube Package with Valves is a direct-fit exhaust connection tube designed to replace the factory mid‑section piping on BMW G80/G81/G82/G83 M models. It is mandatory when installing Remus rear silencer units (part numbers 081021 1500 or 081021 1510), helping ensure optimal performance and proper fitment.

This package includes integrated valve housings compatible with the vehicle’s OEM actuators. This means the system works with the onboard electronics, allowing drivers to retain full control over exhaust valve operation through standard drive modes.

Why Upgrade Your Exhaust Connection Tubes?

BMW’s factory exhaust systems are engineered for balanced performance and noise regulation. However, many enthusiasts want more aggressive sound, less back pressure, and enhanced responsiveness. This is where the Remus 081021 1401 system stands out. By upgrading the connection tubes, you significantly improve exhaust flow thanks to the increased diameter—moving from the original 70 mm tubing to Remus’s 76 mm stainless steel construction.

The result is stronger performance potential, especially when paired with performance-focused rear exhaust components.

Key Features and Advantages

The Remus 081021 1401 BMW G80 G81 G82 Connection Tube Package with Valves offers a combination of high‑end craftsmanship and practical benefits for daily driving and spirited performance alike.

Aggressive Racing Sound: The enlarged tubing and freer-flowing design produce a deeper, more dynamic exhaust note while remaining refined in Comfort mode thanks to valve control.
100% Stainless Steel: Shot‑blasted and corrosion-resistant, the tubes are built for long-term durability in all driving conditions.
Performance Gains: Reduced back pressure helps the S58 engine breathe more efficiently, improving throttle response and enhancing overall power delivery.
Lightweight Construction: The upgraded materials and optimized design help reduce weight compared to stock exhaust components.
Perfect Fitment: Designed to mount directly to factory mounting points without modification, ensuring easy installation.
Handmade in Austria: Remus is known worldwide for precision engineering, and this connection tube package continues that tradition.
2-Year Warranty: The included Remus warranty provides confidence and peace of mind.

How the Valve System Works

One of the standout features of the Remus 081021 1401 package is its integrated valve housings. These retain full compatibility with the BMW factory valve actuators. When installed, the valves open and close according to the selected drive mode—Comfort, Sport, or Sport+—just like the stock system.

This preserves OEM functionality while delivering a far more exhilarating sound when the valves open fully.

Performance and Driving Benefits

Drivers can expect noticeable improvements in sound and responsiveness after installing the Remus connection tubes. The freer-flowing design enhances exhaust scavenging, allowing the S58 engine to operate more efficiently. This can lead to sharper acceleration and better high‑RPM power, especially when paired with additional exhaust or tuning upgrades.

The sound transformation is equally impressive. With valves open, the exhaust note becomes deeper, louder, and more motorsport-inspired—perfect for enthusiasts who want their M3 or M4 to feel more alive.

Compatibility with BMW M3 and M4 Models

The Remus 081021 1401 Connection Tube Package is compatible with the entire BMW G8X lineup equipped with the S58 engine:

BMW G80 M3 (2021+)
BMW G80 M3 Competition (2021+)
BMW G80 M3 Competition xDrive (2021+)
BMW G81 M3 Competition xDrive Touring (2021+)
BMW G82 M4 (2021+)
BMW G82 M4 Competition (2021+)
BMW G82 M4 Competition xDrive (2021+)
BMW G83 M4 Competition Convertible (2021+)
BMW G83 M4 Competition xDrive Convertible (2021+)

A compatibility check is highly recommended before ordering. Simply provide your vehicle registration number (UK) or the last seven digits of your VIN to ensure the correct fitment.

Real‑World Use Cases

The Remus 081021 1401 BMW G80 G81 G82 Connection Tube Package with Valves delivers noticeable advantages for a wide range of drivers:

Daily Drivers: Enjoy improved sound without sacrificing comfort, thanks to the OEM‑controlled valve system.
Track Enthusiasts: Benefit from enhanced exhaust flow and reduced back pressure, ideal for high‑performance driving.
Modified Vehicles: Works seamlessly with other aftermarket exhaust components, particularly Remus rear silencers.
Performance Purists: Experience the full potential of the S58 engine with a freer-breathing exhaust path.

Why Choose Remus?

Remus is a respected name in high‑performance exhaust systems, known for precision engineering, handcrafted construction, and exceptional durability. Their components undergo rigorous testing to meet exacting standards, ensuring premium results and long service life. The Remus 081021 1401 package is no exception—offering unmatched quality for BMW G8X enthusiasts.

Conclusion

If you’re looking to unlock a more aggressive exhaust note, improved performance, and superior craftsmanship for your BMW M3 or M4, the Remus 081021 1401 BMW G80 G81 G82 Connection Tube Package with Valves is an excellent upgrade. With perfect fitment, OEM valve compatibility, and robust stainless‑steel construction, it’s a highly effective way to enhance the driving experience of your S58‑powered machine.

Whether your goal is better sound, more performance, or a more engaging driving experience, this Remus connection tube package delivers results that BMW enthusiasts will appreciate every time they start the engine.

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