
The H&R 2.50" I.D. race spring is a single 12-inch coil rated at 350 lbs/in for demanding suspension tuning and track applications. Crafted in Germany from lightweight (hf) 54SiCr6 spring steel, the high-strength wire allows thinner coils that cut mass and extend travel. H&R states these springs are typically 15% lighter and offer around 10% more travel than comparable options; many lengths and rates are available and units ship pre-blocked.
H&R 2.5 inch ID Single Race Spring Length 12 inch Rate 350 lbs/inch