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resonant sound enhances driving engagement without excessive noise or drone
providing maximum efficiency without sacrificing space
Off-road builds with demanding thermal conditions
The system’s construction emphasizes structural integrity and corrosion resistance
Whether you’re looking to elevate your WRX’s auditory character or optimize exhaust flow for better throttle response
AST Suspension Lowering Springs (50mm/40mm TUV) - 1999-2005 BMW 3 Series 320D/6CYL Touring (E46) YMM_2023_2026_Mercedes_Benz_GLC_Class_Coupe_AMG_C254 resonant sound enhances driving engagementAST Lowering Springs for the 1999 2005 BMW 3 Series (E46) 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.