H&R 60mm ID Single Race Spring Length 120mm Spring Rate 220 N/mm or 1256 lbs/inch - RF120220 fits_2006-2011`Honda`Civic 1967 Pontiac Firebird Base 5

1967 Pontiac Firebird Base 5

1996-1998 GMC C2500 6

Made from true motorsport-grade dry carbon not cosmetic carbon-look plastic

2003-2005 Ford F-250 Super Duty XLT 6

H&R 60mm ID Single Race Spring Length 120mm Spring Rate 220 N/mm or 1256 lbs/inch - RF120220 fits_2006-2011`Honda`Civic 1967 Pontiac Firebird Base 5H&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