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valve opens fully during high-load conditions to allow free flow+ Stock exhaust valve actuaters are reused+ Operation of exhaust valve is unchanged so exhaust tone can be adjusted via the M-Drive settings
Installation & Fitment
Fitment: 2015-2018 F85 X5 / F86 X6 M
fade resistance
we also identified a further restriction in the air feed system
SPL BMW E9X/E8X Rear Upper Arm Links b58 5 inch downpipe valve opens fully during high-loadStock non M arms are made from sheet metal that is merely spot welded together, which tends to flex and bend under moderate loads let alone track day or racing stresses. If you use grippier tires and an engine with more torque, then the stock arms aren't able to provide stability and consistent handling. BMW E9X E8X Titanium Series Rear Upper Arms, which include both the guide (traction) and camber (wishbone) arms, feature gun drilled 2024 Aluminum
