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The H&R 60mm I.D. race spring (100mm length, 120 N/mm) is a single main race spring crafted from lightweight (hf) 54SiCr6 spring steel. Manufactured in Germany with high-tensile wire, the thinner construction achieves about 15% less weight and roughly 10% more travel than comparable springs, expanding tuning options and improving response for track use. H&R pre-blocks main springs to avoid setting or sag. The 60mm range includes many lengths and rates plus tender springs for demanding motorsport and Euro-spec cars such as the Porsche GT3.
H&R 60mm ID Single Race Spring Length 100mm Spring Rate 120 N/mm or 685 lbs/inch
