H&R 60mm ID Single Race Spring Length 300mm Spring Rate 30 N/mm or 171 lbs/inch 2024-nissan-z-esi7488751 The exclusive design improves air

The exclusive design improves air flow to the turbocharger

They are guaranteed not to fail to the said RPM

Brembo 08-09 CLK63 AMG Black Series (W209) Rear GT BBK 4 Piston Cast 345x28 2pc Rotor Drilled-Red

AWD) Front GT BBK 6 Piston Cast 380x32 2pc Rotor Slotted Type-1- Yellow

H&R 60mm ID Single Race Spring Length 300mm Spring Rate 30 N/mm or 171 lbs/inch 2024-nissan-z-esi7488751 The exclusive design improves airH&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