SPL Parts 06-13 BMW 3 Series/1 Series (E9X/E8X) Rear Upper Arm Links - SPL RUA E9X Mass Air Flow Sensors Five Layers of Progressively Finer

Five Layers of Progressively Finer Mesh Cotton Gauze Media

Large diameter (1 3/8") Billet 6061-T6 rods are precision CNC machined and gun drilled to reduce unsprung weight while maintaning high strength and stiffness

Built-in External Fins: Built-in external fins transfer heat from the oil to the outside air for maximum cooling

Coupe models require modification to shorten the mid-section for proper fitment

Often overlooked the interior of your car deserves the same attention as the exterior

SPL Parts 06-13 BMW 3 Series/1 Series (E9X/E8X) Rear Upper Arm Links - SPL RUA E9X Mass Air Flow Sensors Five Layers of Progressively FinerStock 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 Rear Upper Arms, which include both the guide (traction) and camber (wishbone) arms, feature gun drilled 2024 Aluminum links that are