H&R 60mm ID Single Race Spring Length 200mm Spring Rate 30 N/mm or 171 lbs/inch - RF200030 Air Intake Systems Tein 11-13 Infiniti M37 14-19

Tein 11-13 Infiniti M37 14-19 q70 (kY51) Flex Z Coilovers

Dodge Diesel Performance

This spoiler is made out of light-weight carbon fiber material utilizing our signature autoclave forming process to give it superior strength and rigidity

Featuring detailed instructions

This kit's double bellows air spring complements a 30-level adjustable

H&R 60mm ID Single Race Spring Length 200mm Spring Rate 30 N/mm or 171 lbs/inch - RF200030 Air Intake Systems Tein 11-13 Infiniti M37 14-19H&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