H&R 60mm ID Single Race Spring Length 100mm Spring Rate 200 N/mm or 1142 lbs/inch - RF100200 fits_2009-2012`Porsche`911 Its bold sculpted design amplifies

Its bold sculpted design amplifies the muscular presence of the X5M/X6M while channeling airflow more efficiently to enhance stability and aerodynamic balance

The Mishimoto'sRT-4 intercooler is constructed with high-quality cast end tanks for improved airflow and increased durability

whether it be a launch or high G cornering loads

clean air (from your car and your new shocks)

Allows custom tuning of your suspension

H&R 60mm ID Single Race Spring Length 100mm Spring Rate 200 N/mm or 1142 lbs/inch - RF100200 fits_2009-2012`Porsche`911 Its bold sculpted design amplifiesH&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