H&R 60mm ID Single Race Spring Length 140mm Spring Rate 170 N/mm or 971 lbs/inch - RF140170 fits_2004-2008`Nissan`350Z High Flow Stainless Steel Muffler

High Flow Stainless Steel Muffler

Lowers Operating Temperature

low-restriction tube that enhances throttle response and boosts performance

Utilizing factory mounting points

There's no greater enemy for a transmission than heat

H&R 60mm ID Single Race Spring Length 140mm Spring Rate 170 N/mm or 971 lbs/inch - RF140170 fits_2004-2008`Nissan`350Z High Flow Stainless Steel MufflerH&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