H&R 60mm ID Single Race Spring Length 180mm Spring Rate 160 N/mm or 913 lbs/inch - RF180160 fits_1990-1994`Lexus`LS400 We went through several designs

We went through several designs to get to where we are now

tackling rugged off-road terrain

This system utilizes 3" to 2-1/2" mandrel bent

1997-2000 Chevrolet K2500 6

H&R 60mm ID Single Race Spring Length 180mm Spring Rate 160 N/mm or 913 lbs/inch - RF180160 fits_1990-1994`Lexus`LS400 We went through several designsH&R 2. 50" I. D. Race Springs are made with extremely high tensile strength wire alloy which allows the use of a thinner wire. Manufactured using advanced materials and precision technology in Germany, H&R 2. 50" I. D. Race Springs are crafted from special lightweight (hf) 54SiCr6 spring steel. For any given spring rate, they are on average 15% lighter and have 10% more travel than competitors' springs. Main springs range from 6" to 18" in length and