Ferrari FXX for sale Borrowing technology from the Enzo Ferrari, the Ferrari FXX increased displacement on the Enzo's engine to 6,262 cc and boosted output to achieve a theoretical top speed of 400 km/h In practice, the engine still produces an impressive 340 km/h Over a twoyear period starting in 05, 30 were produced · Ferrari Enzo FXX Evoluzione has a weight to power ratio of 134 kg (295 lb) per horsepower, a power to weight ratio similar to that of its rival, the Pagani Zonda Revolución Ferrari has built 30, adding one special edition to the 29 that were originally planned The original 29 have all been sold to preselected past Ferrari customers · The Ferrari FXXK Evo offers 23 percent more downforce than the FXXK Compared to the LaFerrari, it is more than 75 percent The FXXK Evo has a fixed wing with a "twin profile", which is to work together with the active rear spoiler The active rear spoiler itself receives a revised control logic Inside, there is a new steering wh