
The H&R 2.50" I.D. race spring is a single 12-inch coil rated at 425 lbs/in, intended for precise tuning in high-load setups. Built in Germany from lightweight (hf) 54SiCr6 spring steel, the high-tensile wire allows thinner coils that reduce weight and increase travel. H&R reports these springs are on average 15% lighter and deliver about 10% more travel than many alternatives; the program includes many lengths and rates and springs are supplied pre-blocked.
H&R 2.5 inch ID Single Race Spring Length 12 inch Rate 425 lbs/inch