Description
Take full control of your exhaust sound with the SST DELUXE Exhaust Flap / Valve Control, developed specifically for the BMW 2 Series and M235x (F74 / F78, model year 2025+). This advanced plug-and-play control unit allows you to manually open or close the exhaust valves whenever you choose, delivering instant sound customization at the push of a button.
The system integrates seamlessly with the factory exhaust and vehicle electronics, ensuring flawless operation without error messages. When combined with a performance or sports exhaust system, the sound enhancement becomes even more pronounced.
Manufactured in Germany and built to the highest quality standards, the SST DELUXE Control offers diagnostic monitoring, multiple sound modes, and long-term reliability in a compact, waterproof design.
Key Features & Benefits
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Plug-and-play exhaust flap control module
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Manual control over exhaust valves
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Works with OEM exhaust system and performance exhausts
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No fault codes or interference with vehicle electronics
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Fully reversible installation
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Made in Germany
Control Modes
You can select and switch between multiple exhaust valve modes:
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Sport Mode – Exhaust flaps permanently open for maximum sound
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Comfort Mode – Exhaust flaps permanently closed for reduced volume
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Factory Mode – OEM exhaust valve behavior
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Freestyle Mode – Adjustable valve positions: 25% / 50% / 75% open
Additional programmable features allow you to choose whether the system:
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Remembers the last selected mode, or
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Always starts in a predefined mode when the engine is started
DELUXE Control – Advanced Diagnostics
The DELUXE-Control (+Diagnostic) version continuously monitors the exhaust flaps and detects malfunctions such as:
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Jammed or sluggish valves
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Failure to reach end positions
Any detected issue is reported directly to the vehicle, ensuring safe and reliable operation.
The system also includes a valve re-learning function, required when:
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Replacing exhaust flaps
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Installing exhaust valves in a different exhaust system
Technical Specifications
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Control unit type: AKS.BMW2
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Number of controlled exhaust flaps: 2
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Protection class: IP66 (dustproof & waterproof)
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Installation locations: trunk or behind rear bumper
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Dimensions: 65 × 50 × 35 mm
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Quiescent current: None when switched off
Vehicle Compatibility
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BMW 2 Series (F74 / F78, 2025–2026)
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BMW M235x (F74 / F78)
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Engine output: 221 kW / 296 hp
Installation
The control unit is delivered pre-assembled and pre-programmed, including illustrated installation and operating instructions. Installation is quick and straightforward, with no permanent modifications required.
Legal Notice (Important)
Not approved for road use within the European Union
This product may not be installed in vehicles with ABE / road approval in the EU. Installation will result in the expiry of the vehicle’s operating license.
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For racing use only
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For show purposes
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For export outside the EU
Please check and comply with local laws and regulations before installation.
