AST Suspension Lowering Springs (35mm/25mm TUV) - 2010+ Chevrolet Spark 1.0/1.2 (KL1M) Z4 M Part Number W63225 Part Name

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AST Suspension Lowering Springs (35mm/25mm TUV) - 2010+ Chevrolet Spark 1.0/1.2 (KL1M) Z4 M Part Number W63225 Part NameAST Lowering Springs for the 2010+ Chevrolet Spark (KL1M) 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.