AST Suspension Lowering Springs (35mm/30mm TUV) - 2005-2012 Alfa Romeo 159 2.4JTDM (939) Roadmaster The D2 Racing RS Series

The D2 Racing RS Series Coilover Kit for the 2006-2015 Mazda MX-5 Miata (NC) is our flagship coilover

Engineered with high-strength construction and performance bushings to reduce flex and improve suspension responsiveness

6 4cyl (R57)

Spring rate 140 N/mm

AST Suspension Lowering Springs (35mm/30mm TUV) - 2005-2012 Alfa Romeo 159 2.4JTDM (939) Roadmaster The D2 Racing RS SeriesAST Lowering Springs for the 2005 2012 Alfa Romeo 159 (939) 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.