AST Suspension Lowering Springs (25mm/15mm TUV) - 2007-2013 BMW M3 Coupe (E90/E92) 1991 Replacing the compliant rubber factory

Replacing the compliant rubber factory bushings locks the subframe to the chassis for sharper turn-in

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AST Suspension Lowering Springs (25mm/15mm TUV) - 2007-2013 BMW M3 Coupe (E90/E92) 1991 Replacing the compliant rubber factoryAST Lowering Springs for the 2007 2013 BMW M3 (E90 E92) 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.