The AST Linear Race spring is a single 80mm-length coilover spring with a 140 N/mm rate and 61mm inner diameter. Supplied as an individual spring for custom coilover builds, its very high linear rate and compact length are intended for applications needing firm springing while fitting standard 61mm seat IDs in specialized suspension setups.
AST Linear Race Springs - 80mm Length x 140 N/mm Rate x 61mm ID - Single