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This air filter is ideal for off-road enthusiasts
Whether you’re a daily driver or a spirited weekend enthusiast
Designed for drivers who want to maintain or return to factory-like comfort and stability
simplifying the upgrade process and maintaining factory fitment standards
AST Suspension Lowering Springs (35mm/35mm) - 1993-1999 BMW 8 Series 840Ci (E31) Exclusive - 2008-2026 Dodge Challenger This air filter is idealAST Lowering Springs for the 1993 1999 BMW 8 Series (E31) are manufactured from a premium high tensile chromium silicone wire which is handpicked by AST engineers for its quality and metal consistency. Each spring is cold wound and then heat treated to increase hardness and reduce internal stresses present after winding. Each spring is then individually shot peened, phosphate treated and then powder coated to outlast even the life of the vehicle.