The AST linear race spring is a single coil spring for coilover assemblies, specified at 220mm length with a 60 N/mm linear rate and 61mm inner diameter. It offers a consistent linear feel for tuning ride height and suspension stiffness when paired with adjustable dampers. Sold individually; order matching rates to balance handling front-to-rear.
AST Linear Race Springs - 220mm Length x 60 N/mm Rate x 61mm ID - Single