Working in conjunction with the driver of Kinky Kiley, Infiniti has built a seriously quick FX. Starting with a standard FX50S Premium, Infiniti bumped the power of the 5.0-liter V-8 up from 385 to 414 thanks to a freer-flowing exhaust and revised ECU. The transmission features a longer final gear ratio, allowing it to hit a top speed of 186 miles per hour (as opposed to the electronically limited 155 of a standard FX50). The FX SV also features extensive use of carbon fiber, which served to cut 101 pounds of body fat. Finally, the suspension has been lowered three-quarters of an inch to increase aerodynamic efficiency and handling.
