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The H&R 60mm I.D. race spring, 80mm long with a 40 N/mm (229 lbs/in) rate, uses special lightweight (hf) 54SiCr6 spring steel and H&R's precision manufacturing. The high‑tensile alloy lets the company use thinner wire, reducing weight and offering roughly 10% more travel than many competitors. Each spring is factory pre‑blocked to resist setting or sagging, and the 60mm program provides a wide selection of lengths and rates for custom tuning in motorsport and performance street applications.
H&R 60mm ID Single Race Spring Length 80mm Spring Rate 40 N/mm or 229 lbs/inch
