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adjustable control arms are required to make camber and toe adjustments after eliminating the stock eccentric bolts
The progressive spring rates deliver a more engaged driving feel
providing a direct bolt-on replacement that restores your vehicle’s suspension responsiveness
Features of the 339387:
Designed for enthusiasts who demand a bold auditory experience and improved exhaust flow
AST Suspension Lowering Springs (40mm/40mm TUV) - 1987-1993 Ford Sierra Sedan (GBG) YMM_2005_2008_Pontiac_Grand_Prix_GXP_W_body adjustable control arms are requiredAST Lowering Springs for the 1987 1993 Ford Sierra (GBG) 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.
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