H&R 60mm ID Single Race Spring Length 140mm Spring Rate 170 N/mm or 971 lbs/inch - RF140170 fits_2004-2008`Nissan`350Z Up to 8% Flow Increase

Up to 8% Flow Increase

Featuring a dual 3-1/2-inch black 304 stainless steel exhaust tip

Take your G80 M3 or G82/G83 M4's performance to new heights with AutoTecknic's Dry Carbon Intake Air Duct Set—an innovative addition designed to elevate your driving experience

14 kg) per Side Precise Dynamic Geometry

H&R 60mm ID Single Race Spring Length 140mm Spring Rate 170 N/mm or 971 lbs/inch - RF140170 fits_2004-2008`Nissan`350Z Up to 8% Flow IncreaseH&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