The Kyosho Lazer ZX-S kit comes with a mix of black steel and nickel-plated screws. These were replaced today with Kyosho's titanium JIS head (older style) screws that are lighter and resistant,TST WORX 520 Rear Sprocket | Kawasaki ZX-10R / ZX-10RR,TST WORX 520 Rear Sprocket | Kawasaki ZX-10R / ZX-10RR,Spring Engaged Profile Rail Brake,Spring Engaged Profile Rail Brake