Brake pads (Carbotech XP10/XP8)
Brake fluid (RBF600 is good enough)
Engine/differential/transmission oil to synthetic oil (all these components run really hot)
Tires (Dunlop Z1SS, Hankook RS3, Federal 595RS-R, Bridgestone RE11, Advan AD08, etc.)
Crash bolts to save your front tires...somewhat...
Safety first!
OEM tires will chunk!