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The AST Helper Spring is a set of two auxiliary springs measuring 70mm long with a 50 N/mm rate and a 75mm inner diameter. Sold as matched pairs for coilover-style setups, these helper springs offer stronger auxiliary support where a larger 75mm ID is required. The 70mm length keeps installation compact while providing consistent pairwise support for suspension tuning.
AST Helper Springs - 70mm Length x 50 N/mm Rate x 75mm ID - Set of 2
