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The H&R 60mm I.D. race spring, 90mm long with a 58 N/mm (331 lbs/in) rate, uses H&R's special lightweight (hf) 54SiCr6 spring steel and precision production methods. The material allows thinner wire for lighter weight and about 10% more travel than many competitors. These springs are factory pre‑blocked to resist permanent set or sag, and the broad 60mm line delivers many lengths and rates so tuners can dial in suspension behavior for motorsport or aggressive street use.
H&R 60mm ID Single Race Spring Length 90mm Spring Rate 58 N/mm or 331 lbs/inch
