The AST 200mm linear race spring with a 140 N/mm rate and 61mm inner diameter is sold individually for extreme-rate coilover tuning. Its linear profile keeps compression force predictable across the stroke, aiding in ride-height stability and sharp handling for drivers seeking minimal body motion and maximum responsiveness on track or aggressive street setups.
AST Linear Race Springs - 200mm Length x 140 N/mm Rate x 61mm ID - Single