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The H&R 60mm I.D. race spring is a single 140mm main spring with an 80 N/mm (≈457 lbs/in) rate for tailored suspension setups. Made in Germany from (hf) 54SiCr6 lightweight spring steel, the 2.50" I.D. construction permits thinner high‑tensile wire that reduces weight by about 15% and yields roughly 10% more travel than many competitor springs. H&R’s extensive 60mm offering includes many lengths and rates and tender spring options; main springs are factory pre‑blocked to avoid setting.
H&R 60mm ID Single Race Spring Length 140mm Spring Rate 80 N/mm or 457 lbs/inch
