AST Suspension Lowering Springs (35mm/35mm) - 1986-1989 Mazda 323 GT (BF/BF1) G37x 2020 Nissan Frontier PRO-4X (D40)

2020 Nissan Frontier PRO-4X (D40)

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AST Suspension Lowering Springs (35mm/35mm) - 1986-1989 Mazda 323 GT (BF/BF1) G37x 2020 Nissan Frontier PRO-4X (D40)AST Lowering Springs for the 1986 1989 Mazda 323 (BF BF1) 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.