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The AST Helper Spring is a set of two auxiliary springs measuring 70mm long with a 65 N/mm rate and a 75mm inner diameter. Sold as a matched pair for coilover-style assemblies, these high-rate helper springs provide firm auxiliary support where a larger 75mm ID is required. The 70mm length keeps the components compact while offering consistent pairwise support during suspension setup.
AST Helper Springs - 70mm Length x 65 N/mm Rate x 75mm ID - Set of 2
