Genuine Toyota parts will have a part number on it that you can order at any Toyota dealer. Most companies selling the part will state it as "genuine" Toyota parts. When in doubt buy from the Toyota dealer.
Brakes Caliper / Rotors: (1) Calipers must bolt up to stock location (2) Any brakes with rotors and thickness larger than stock (3) Rotors must be ferrous (iron/steel) (4) Cross drilled / slotted / vented rotors are allowed (5) Aluminum rotor hats are allowed. (6) Number of pistons must be equal or greater than stock (7) Drums brakes can be upgraded to disc Brake Lines: (1) Any DOT brake lines an be used Anti Lock Brakes (ABS): (1) Can be electrical disabled, but not modified in any way
Maximum Widths: Any wheels are allowed with widths up to the following (OE wheels exceeding these maximums are not permitted): (1) STF, STC, STS, STR (AWD) – 7.5" (2) STX (AWD) – 8.0" (3) STX (2WD), STR (2WD) – 9.0" (4) STU – unlimited
Requirements: (1) Tires must be designed for highway use on passenger cars. Treadwear: (1) Minimum UTQG Treadwear Grade of 140. (2) (Effective 1/1/2015 - Minimum UTQG Treadwear Grade of 200.) Maxmimum Width: (1) STF, STC, STS, STR (AWD) – 225 mm (2) STX (AWD), STU (AWD) – 245 mm (3) STR (2WD) – 255 mm (4) STX (2WD) – 265 mm (5) STU (2WD) – 285 mm
Autocross/Solo II events are low to medium speed auto racing events; they are often run on parking lots and airport runways, although street events and events at Go Kart tracks sometimes take place. Generally a course will be defined using traffic cones. One driver at a time negotiates a course laid out with the cones, or pylons, testing their skill against the clock. Time penalties are charged for disturbing cones. In most regions, the penalty is 2 seconds per cone, although in some places it may be 1 second. There is an upper speed guideline for Solo II which is intended to keep speeds in a domain that most drivers might have encountered on the streets and highways; the fastest cars at a Solo II should not get much over 70mph. Generally, each driver takes three or four runs at an event. A driver is awarded the best time of all runs taken.