Torsion-spring technology eliminates exhaust valve buzz at 2,000-3,500 RPM (common UK motorway speeds). For BMW X1/X2/X5/X6 SERIES F48/F39/F15/F85/F16/F86 (2012-2019). Precision-engineered to match FOR BMW part 18307620323 – seamless compatibility with X1/X2/X5/X6X7/Z4 F33/F36 petrol models.
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