AST 30mm/25mm Lowering Springs | BMW 6 Series E63/E64 (ASTLS-14-446) YMM_2009_2015_Volkswagen_Golf_R_Mk6 Whether you're customizing your M3

Whether you're customizing your M3 for show or performance

a refined aesthetic

AST Lowering Springs for the 2014+ BMW 4 Series (F36) are manufactured from a premium high tensile chromium-silicone wire which is handpicked by AST engineers for its quality and metal consistency

making them a versatile upgrade for a range of vehicles

AST 30mm/25mm Lowering Springs | BMW 6 Series E63/E64 (ASTLS-14-446) YMM_2009_2015_Volkswagen_Golf_R_Mk6 Whether you're customizing your M3AST Lowering Springs for the 2004 2011 BMW 6 Series (E63 E64) 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.