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The AST Linear Race Spring is a single 140 mm suspension spring with a linear 340 N/mm rate and a 61 mm inner diameter. It delivers dependable linear compression for accurate spring-rate tuning, helping refine ride-height and handling dynamics. Ideal for coilover-style suspension systems, the spring’s steady characteristic supports repeatable setup changes for track and high-performance street use.
AST Linear Race Springs - 140mm Length x 340 N/mm Rate x 61mm ID - Single
