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This RACING Axle-Back Titanium Sport Exhaust system is engineered specifically for BMW M3/M4 Competition xDrive Touring (G234M, 2021+) models, compatible with both GPF and non-GPF configurations. The system features a high-flow 76mm titanium tubing (increased from the factory 70mm) with integrated valves that maintain operation through the vehicle's original actuators and onboard electronics. Handcrafted in Austria from full titanium construction, this exhaust delivers an aggressive racing sound, significant weight reduction, and performance gains through low back pressure design. Please note this system requires cutting the original exhaust and lacks ECE type approval, making it intended solely for racing/closed-road use. ECU tuning is recommended for maximum performance benefits and to prevent check engine lights. The system is backed by a 24-month warranty.
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Compatibility & Specifications:
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BMW M3/M4 Competition xDrive Touring (G234M, 2021+)
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Compatible with and without GPF systems
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Tube diameter: 76mm (increased from factory 70mm)
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Full titanium construction with integrated valves
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Performance & Quality:
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Aggressive racing sound profile
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Reduced back pressure for performance gains
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Lightweight titanium construction
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Perfect fitment and handcrafted in Austria
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24-month manufacturer warranty
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Installation & Requirements:
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Requires cutting original exhaust system
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Maintains factory valve operation via original actuators
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Uses vehicle's existing mounting points
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ECU tuning recommended for optimal performance
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Legal Compliance:
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No ECE type approval
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Intended for racing/closed-road use only
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Not permitted for public road use
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May trigger check engine light without ECU tuning
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Tail Pipes: Titanium tail pipe set: 4 tail pipes OPT with OnePieceTechnology Ø 100mm, L=140mm titanium brushed or titanium black PVD coated, 333g incl. full titanium clamp and titanium screw