AST Suspension Lowering Springs (35mm/30mm) - 2014+ BMW 4 Series 418i/420i/428i/430i/418D/420D Gran Coupe (F36) whiteline-bump-steer-correction-kit The D2 Racing RS Series

The D2 Racing RS Series Coilover Kit for the 1990-1993 Toyota Celica is our flagship coilover

2012 Audi R8 V10 (w/o Magnetic Ride)

1997 Mercedes-Benz C-Class C180/C200/C200D/C220/C230 4CYL (W202)

2006 BMW 7 Series w/o Self Leveling Suspension (E66)

AST Suspension Lowering Springs (35mm/30mm) - 2014+ BMW 4 Series 418i/420i/428i/430i/418D/420D Gran Coupe (F36) whiteline-bump-steer-correction-kit The D2 Racing RS SeriesAST 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. 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