AST Suspension Lowering Springs (40mm/30mm) - 2004-2010 BMW X3 2.0/2.5/3.0/1.8D/2.0D (E83) YMM_2004_2010_Porsche_911_VII_997_1 The high-quality carbon fiber construction

The high-quality carbon fiber construction ensures long-lasting durability and resistance to weathering

Suitable for street enthusiasts and track day participants aiming for a more aggressive look and improved stability at high speeds

Damping is adjusted simultaneously and height is adjusted independently of piston and spring stroke

The bumper is engineered for a precise fit

AST Suspension Lowering Springs (40mm/30mm) - 2004-2010 BMW X3 2.0/2.5/3.0/1.8D/2.0D (E83) YMM_2004_2010_Porsche_911_VII_997_1 The high-quality carbon fiber constructionAST Lowering Springs for the 2004 2010 BMW X3 (E83) 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. Features