
The H&R 2.50" I.D. race spring is a single 12-inch coil rated at 600 lbs/in, intended for specialist suspension applications requiring very high rates. Built in Germany from lightweight (hf) 54SiCr6 spring steel, the high-strength wire allows thinner coils to reduce mass and support additional travel. H&R states these springs are about 15% lighter and provide roughly 10% more travel than comparable options; a wide selection of lengths and rates is offered and springs are pre-blocked.
H&R 2.5 inch ID Single Race Spring Length 12 inch Rate 600 lbs/inch