AST linear-rate coilover spring in a 300mm length with a 25 N/mm rate and 61mm inner diameter, sold singly for suspension tuning. The linear characteristic gives steady compression through travel for predictable ride behavior and easier height adjustment. Choose this single spring when your coilover assembly accepts a 61mm ID and you need a lower 25 N/mm rate for softer response.
AST Linear Race Springs - 300mm Length x 25 N/mm Rate x 61mm ID - Single