Spec Focus[1](SF) is a class of racing car used in National Auto Sport Association (NASA). The SF class focuses on the popular Ford Focus. SF is geared toward budget-minded enthusiasts looking for an affordable and fun class with rules that guarantee close competition on a reasonable budget with cars built in this century. SF allows owners of a Ford Focus to go racing by simply adding an easily available assortment of bolt-on parts and safety equipment and is a perfect starting point for aspiring new drivers to get into racing. The normal cost for a Spec Focus is $8,000 to $10,000.
Spec Focus races are run at all NASA regional events, as well as the annual National Championships held each year at the Mid-Ohio Sports Car Course.
This section is not an exhaustive set of rules; it is intended to give the reader an idea of the preparation level of the cars in this class.
Spec Focus use specific Multimatic Inverted Dynamic dampers with Multimatic springs and adjustable front and rear sway bars, SVT Brake kit. Toyo Tires are specified for the Spec Focus Series. The tire are 215/45x17 Toyo R888 Race tires that will fit on a Ford Racing Performance Parts 17x7 wheel.
Cars with 2.0 liter engines have a minimal weight of 2600 pounds and cars with a 2.3 liter Duratec engines have a minimum race weight of 2675 pounds.
